I see no way to tell from the plain language of this certificate whether the parties intended for costs and expenses to be included in the reinsurance limit or excluded from it. Further, in my view the majority has misinterpreted Bellefonte Reins. Co. v Aetna Cas. & Sur. Co. (903 F2d 910 [2d Cir 1990]) in ways that augur further expansion of its much debated holding. Accordingly, I dissent.
I.
The certificate pertains to reinsurance of a $13,500,000 layer ($25,000,000 to $38,500,000) of a $48,000,000 property insurance policy issued by Factory Mutual. Two provisions are at issue. The first provides that the “LIMIT” is “US$ 7,000,000 any one occurrence [part of] US$ 13,500,000 any one occurrence excess of US$ 25,000,000 any one occurrence.”1 The second notes several “CONDITIONS,” including one whereby the certificate is made “subject to same valuation, clauses and conditions as contained in the original policy” (a “following form” provision) and one whereby “[Reinsurers agree ... to bear their proportion of any expenses incurred” (a “follow the settlements” provision).
In essence, the majority concludes that the only reasonable interpretation of these provisions is that the policy contains a $7,000,000 limit (any one occurrence) which is cost-inclusive. This conclusion rests too heavily on the “follow the settlements” provision of the certificate, and fails to consider the “following form” provision. An equally plausible reading is that the parties, who “conditioned”2 the certificate on the same “valuation, clauses and conditions” as exist in the primary property policy— *586where costs are commonly paid in addition to the policy limit* *3 —could have intended to create a cost-exclusive reinsurance limit. Moreover, the parties did not expressly state that the limit was “subject to” the conditions and therefore capped all liability under the certificate (see e.g. Bellefonte). Because the certificate may reasonably be interpreted in either of two ways, I conclude that it is ambiguous (see Evans v Famous Music Corp., 1 NY3d 452 [2004]).4
Moreover, I disagree with the majority’s apparent reading of Bellefonte. In Bellefonte, Aetna issued primary and excess liability policies to A.H. Robins Co., the manufacturer of the Daikon Shield. Aetna reinsured the excess policies with various reinsurers. After an “explosion” of litigation over the device, Aetna and Robins disputed the extent of Aetna’s liability for defense expenses under the excess policies, and ultimately reached a monetary settlement in excess of the limit stated in the excess policy. Aetna then looked to the reinsurers for the excess paid on the underlying policy. The reinsurers refused to pay, arguing that their liability was limited by the reinsurance certificate.
The certificate stated that the reinsurance was provided “subject to the . . . amount of liability set forth herein” (903 F2d at 911). The court concluded that this created a cap on the reinsurers’ liability whether reached through payment of expenses or settlement of claims. The Second Circuit reasoned that “[a]ny other construction of the reinsurance certificates would negate” the “subject to” provision of the certificate (id. at 914; see also Unigard Sec. Ins. Co. v North Riv. Ins. Co., 4 F3d 1049 *587[2d Cir 1993] [following Bellefonte as certificate included same “subject to” language]).
The Bellefonte court also considered and rejected a second argument made by Aetna, which the Appellate Division applied below (2 AD3d 150 [1st Dept 2003]) and the majority now adopts. Aetna argued that the “follow the fortunes” doctrine, as embodied in a clause in the certificate,5 obligated the reinsurers to pay all Aetna’s settlements even if they were in excess of the liability limit in the reinsurance policy. The Bellefonte court rebuffed this argument, noting that “[t]he ‘follow the fortunes’ clauses in the certificates are structured so that they coexist with, rather than supplant, the liability cap. To construe the certificates otherwise would effectively eliminate the limitation on the reinsurers’ liability to the stated amounts” (903 F2d at 913 [emphasis added]). Critically, this prong of the court’s analysis was based on its conclusion that the certificate created a cap on liability through the “subject to” and the “limitation” clauses, and that “the ‘follow the fortunes’ doctrine does not allow Aetna to recover defense costs beyond the express cap stated in the certificates” (id.).
The Appellate Division disregarded the “subject to” analysis in Bellefonte, as does the majority, summarily concluding that “all contracts are subject to their terms and conditions” (2 AD3d at 152). Instead, the Appellate Division relied on Bellefonte’s “follow the fortunes” analysis, and concluded that the “overriding determination in Bellefonte and Unigard was that the ‘follow the fortunes’ clauses of the reinsurance contracts considered there coexisted with, and did not supplant, the contract limitations” (id.). In my view, this was error.
Bellefonte’s holding was not intended as a general rule applicable to any and all reinsurance certificates (see Goldstein, Bellefonte Lives, 8-10 Healey’s Litig Rep Reinsurance 9 [1997] [noting that Bellefonte should have been limited to “the specific contract language” in the certificate]). The holding relies on specific certificate language—“the first two provisions of the re*588insurance certificates” (903 F2d at 913)—which the court determined contained a “cap” on the reinsurers’ liability. Because the certificate had a cap, the “follow the fortunes” clause in the certificate could not supplant the cap, which therefore limited expenses.6
The Appellate Division and now the majority have converted a rule unique to the specific certificate language in Bellefonte into a general principle that a “follow the fortunes” clause never supplants a policy limit. Thus, the majority, like the Appellate Division before it, expands Bellefonte from a contract-specific holding into a rule of general applicability.
When the holding of Bellefonte—that the reinsurance certificate’s specific policy language controls whether costs are included or excluded from the limit—is applied here, it is easily distinguished. There is no “subject to” language in the reinsurance certificate at issue on this appeal. Rather, the certificate contains two discrete provisions—“LIMIT” and “CONDITIONS”—and neither offers any guidance as to whether the “CONDITIONS” are subject to the “LIMIT.”
Further, it is worth observing that practitioners in the reinsurance industry have consistently criticized Bellefonte. Specifically, commentators have noted that in ruling “based solely on a textual interpretation of the language of the certificates,” the Bellefonte court ignored important extrinsic evidence of industry custom and practice showing that the nature of the underlying policy often controlled whether the reinsurance limit was cost-inclusive or cost-exclusive {see Goldstein, Bellefonte Lives [“ (n) otwithstanding Bellefonte . . . the industry for the most part has continued to follow the custom and practice of reinsurers providing coverage for expenses in addition to limits where the reinsured policy also covers expenses in addition to limits”]). There was a fear “that the Bellefonte rule would be applied to the same certificate language but where the reinsured policy covered defense costs in addition to limits” {id.).
*589When Unigard was decided, this fear was realized. There, the certificate language was nearly identical to that in Bellefonte. The Second Circuit rejected extrinsic evidence that the reinsurers covered expenses in addition to the policy limit, instead choosing to rely on its holding in Bellefonte and the similar certificate language (4 F3d at 1071).
Commentators have similarly faulted Allendale Mut. Ins. Co. v Excess Ins. Co. Ltd. (970 F Supp 265 [SD NY 1997], rearg granted and original decision adhered to 992 F Supp 271 [1997], vacated 172 F3d 37 [table, text at 1999 WL 55313, 1999 US App LEXIS 1735 (2d Cir 1999)]). The federal District Court in Allen-dale was the first court to rule on the case now before us, holding that the plain language of the certificate meant that expenses were included in the policy limit.7 Citing Bellefonte and Unigard, the court rejected Factory Mutual’s request to distinguish these cases on the basis of the specific certificate language or the nature of the underlying policies (992 F Supp at 274-275). Allendale was thus judged to be “a significant extension” of Bellefonte on both fronts (see Goldstein, Bellefonte Lives; see also Goldstein, For Whom Does Bellefonte Toll? It Tolls for Thee, 9-7 Mealey’s Litig Rep Reinsurance 12 [1998] [“Because Allendale involved reinsurance of a property policy, rather than a liability policy that provided a defense for the insured, and because the contract at issue lacked certain critical language contained in the Bellefonte and Unigard certificates, Allendale clearly expanded the breadth of the Bellefonte Rule”]).8
*590Today, the majority adopts the Allendale rationale, and suggests that Factory Mutual should have negotiated language “expressly stating that the defense costs were excluded from the indemnification limit,” or otherwise setting forth “an additional limit for loss adjustment expenses that would have been separate and apart from the reinsurers’ liability on the insured property” (majority op at 584-585). But Factory Mutual first obtained the relevant certificate in London in December 1990, about eight months after the Second Circuit decided Bellefonte. It seems harsh and unrealistic for us to fault Factory Mutual for not having drafted this certificate to conform with a recently decided case whose potential future reach could hardly have been predicted at the time.
II.
Here, both parties moved for summary judgment, arguing that the certificate was unambiguous. Although neither party argued that the certificate was ambiguous, ambiguity is an issue of law for the courts (Greenfield, 98 NY2d at 569). Factory Mutual opposed the reinsurers’ motion for summary judgment with extrinsic evidence of industry custom and practice, and thereby created a question of fact concerning the parties’ intent (Mallad Constr. Corp. v County Fed. Sav. & Loan Assn., 32 NY2d 285, 290-293 [1973]). Our precedent establishes that where there is ambiguity in a reinsurance certificate, the surrounding *591circumstances, including industry custom and practice, should be taken into consideration (see London Assur. Corp. v Thompson, 170 NY 94 [1902] ;9 see also Christiania Gen. Ins. Corp. of N.Y. v Great Am. Ins. Co., 979 F2d 268, 274 [2d Cir 1992] [citing London Assur.]; 1 Couch on Insurance 3d § 9:15, at 9-53).
Accordingly, I would modify the order of the Appellate Division by denying both motions, and remand the matter for further proceedings consistent with this opinion.
Chief Judge Kaye and Judges Ciparick, Rosenblatt, Graffeo and R.S. Smith concur with Judge G.B. Smith; Judge Read dissents and votes to modify by denying both motions for summary judgment in a separate opinion.
Order affirmed, etc.
. Sorema N.A. reinsured the remaining $6,500,000 of the $13,500,000 layer. Unlike Excess, Sorema paid up to its limit and also paid its proportion of costs.
. The word “conditions” is not illuminative. Restatement (Second) of Contracts § 224 defines a condition as “an event, not certain to occur, which must occur, unless its non-occurrence is excused, before performance under a *586contract becomes due.” As the Comments note, the term “condition” “is used with a wide variety of other meanings in legal discourse” (Restatement [Second] of Contracts § 224, Comment a).
. The courts below did not determine whether or not this was the case here.
. Indeed, the history of this case betokens ambiguity: five courts have now interpreted the certificate with varying results. Supreme Court and the Rhode Island Superior Court concluded that the certificate does not contain a cap and therefore the limit is cost-exclusive (see Factory Mut. Ins. Co. v Excess Ins. Co., Super Ct, Providence, RI, May 22, 2001, Hurst, J., PC 00-0760 [litigation enjoined 285 AD2d 351 (1st Dept 2001)]; Excess Ins. Co. v Factory Mut. Ins. Co., Sup Ct, NY County, Aug. 22, 2002, Moskowitz, J., Index No. 605759/ 99). The majority now joins the Appellate Division and the United States District Court for the Southern District, which found that the limit is cost-inclusive (see 2 AD3d 150 [1st Dept 2003]; Allendale Mut. Ins. Co. v Excess Ins. Co. Ltd., 970 F Supp 265 [SD NY 1997], rearg granted and original decision adhered to 992 F Supp 271 [1997], vacated 172 F3d 37 [table, text at 1999 WL 55313, 1999 US App LEXIS 1735 (2d Cir 1999)]).
. The clause provided that “the liability of the Reinsurer . . . shall follow that of [Aetna]” (903 F2d at 911). These clauses are generally construed to mean that “the reinsurer follows the insurer’s fortunes under the latter’s insurance policies, subject to the stated exclusions and limitations in the reinsurance agreement . . . Without such a concept—and on occasion even with it—the reinsurer could successfully assert a defense to a claim under the reinsurance agreement, that was not asserted by the insurer with respect to the insurance claim, leaving the insurer with an unidentified liability” (Staring, Reinsurance § 18:1).
. Our decision in Travelers Cas. & Sur. Co. v Certain Underwriters at Lloyd’s of London (96 NY2d 583 [2001]) is not to the contrary. There, we were asked whether a “follow the fortunes” clause negated an insurer’s obligation to apply the allocation methodology contained in the reinsurance policy. In rejecting this argument, we agreed with the “rationale” of the Second Circuit that the follow the fortunes doctrine “does not alter the terms or override the language of reinsurance policies” (id. at 596). Thus, Travelers supports the proposition that each reinsurance policy must be interpreted according to its own terms.
. On reargument, however, the Allendale court acknowledged that “[i]n a purely semantic sense, the Reinsurance Agreement is ambiguous” (992 F Supp at 276). Nonetheless, the judge concluded that the certificate was only reasonably interpreted to be cost-inclusive. The Allendale court (like the majority) seemed concerned that a reinsurer would otherwise accept open-ended liability for costs (992 F Supp at 276 n 4), and thus appears to have “alter[ed] the contract to reflect its personal notions of fairness and equity” (Greenfield v Philles Records, 98 NY2d 562, 570 [2002]).
. Other courts have regarded Bellefonte and Unigard skeptically. Aetna Cas. & Sur. Co. v Philadelphia Reins. Corp. (1995 WL 217631, 1995 US Dist LEXIS 4806 [ED Pa, Apr. 13, 1995]) followed Bellefonte, but only because Aetna was a party in Bellefonte and therefore was collaterally estopped from relitigating the issue. The court in Philadelphia Reinsurance preferred the analysis used in Penn Re, Inc. v Aetna Cas. & Sur. Co. (1987 WL 909519, 1987 US Dist LEXIS 15252 [ED NC, June 30, 1987]). There, the court (deciding the issue prior to Bellefonte) interpreted a reinsurance policy containing a “subject to” provision and found that the reinsurer was liable for costs in addition to the limit of the policy. Bellefonte rejected the analysis of Penn Re. In North Riv. Ins. Co. v CIGNA Reins. Co. (52 F3d 1194 [3d Cir 1995]), the court was *590faced with a Bellefonte question, which it avoided by holding that whether the certificate placed a cap on the policy was not timely raised. In TIG Premier Ins. Co. v Hartford Acc. & Indem. Co. (35 F Supp 2d 348, 350 [SD NY 1999]), the court sidestepped Bellefonte by applying California law, which allows use of extrinsic evidence to reveal a “latent ambiguity” in a contract that “appears unambiguous on its face.” Accordingly, the court reviewed extrinsic evidence showing that reinsurers commonly pay expenses in addition to limits. Finding a genuine issue of fact, the court denied the motion for summary judgment. In addition, arbitrators have apparently declined to follow Bellefonte, at least in some cases {see Monin and Brady, Reinsurance Disputes: Death of the Handshake, 61 Def Couns J 529, 538 n 22 [Oct. 1994]; Monin and Brady, Updating Reinsurance Law Developments: The Gloves are Beginning to Come Off, 63 Def Couns J 219, 223 [Apr. 1996]; see also Wilker and Lenci, Much Ado About Nothing: A Response Regarding Bellefonte’s Reach, 9-10 Mealey’s Litig Rep Reinsurance 16 [1998] [stating that “arbitration panels, even those sitting in the Second Circuit, are free to ignore Bellefonte, Unigard, and Allendale’’ and suggesting that “most properly constituted arbitration panels will not follow those decisions or any generalized Bellefonte rule unless it is shown that it was clearly the cedent’s and reinsurer’s intention not to cover expenses in addition to the liability limit of the certificate in question”]).
. “Reinsurance, like any other contract, depends upon the intention of the parties, to be gathered from the words used, taking into account, when the meaning is doubtful, the surrounding circumstances. Custom or usage is presumed to enter into the intention when it is found as a fact, not only that it existed, but was uniform, reasonable and well settled, and either known to the parties when the contract was made, or so generally known as to raise a presumption that they had it in mind at the time” (170 NY at 99).