Reinsurance

6 Months Ended

Jun. 30, 2025

Reinsurance Disclosures [Abstract]

Reinsurance [Text Block]

Reinsurance

Reinsurance recoverable on ceded reinsurance

	June 30, 2025				December 31, 2024
(in millions of U.S. dollars)	Net Reinsurance Recoverable (1)		Valuation allowance		Net Reinsurance Recoverable (1)		Valuation allowance
Reinsurance recoverable on unpaid losses and loss expenses	$	17,691	$	261	$	17,734	$	242
Reinsurance recoverable on paid losses and loss expenses	1,904		62		2,043		68
Reinsurance recoverable on losses and loss expenses	$	19,595	$	323	$	19,777	$	310
Reinsurance recoverable on policy benefits	$	297	$	—	$	289	$	—

(1)Net of valuation allowance for uncollectible reinsurance.

The following table presents a roll-forward of valuation allowance for uncollectible reinsurance related to Reinsurance recoverable on losses and loss expenses:

	Six Months Ended
	June 30
(in millions of U.S. dollars)	2025		2024
Valuation allowance for uncollectible reinsurance - beginning of period	$	310	$	367
Provision for uncollectible reinsurance	17		18
Write-offs charged against the valuation allowance	(6)		(3)
Foreign exchange revaluation	2		(1)
Valuation allowance for uncollectible reinsurance - end of period	$	323	$	381

For additional information, refer to Note 1 e) to the Consolidated Financial Statements of our 2024 Form 10-K.