Reinsurance (Tables)

12 Months Ended

Dec. 31, 2022

Reinsurance Disclosures [Abstract]

Schedule of direct, assumed and ceded premiums

The following table presents direct, assumed, and ceded premiums:

	Year Ended December 31
(in millions of U.S. dollars)	2022		2021		2020
Premiums written
Direct	$	47,511	$	42,811	$	37,749
Assumed	4,502		3,969		3,512
Ceded	(10,258)		(8,912)		(7,441)
Net	$	41,755	$	37,868	$	33,820
Premiums earned
Direct	$	46,154	$	41,138	$	37,037
Assumed	4,430		3,650		3,323
Ceded	(10,195)		(8,433)		(7,243)
Net	$	40,389	$	36,355	$	33,117

Schedule of Reinsurance Recoverable on Ceded Insurance

Reinsurance recoverable on ceded reinsurance

	December 31, 2022				December 31, 2021
(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	$	17,128	$	289	$	16,184	$	271
Reinsurance recoverable on paid losses and loss expenses	1,773		62		1,182		58
Reinsurance recoverable on losses and loss expenses	$	18,901	$	351	$	17,366	$	329
Reinsurance recoverable on policy benefits	$	303	$	4	$	213	$	4

Reinsurance Recoverable, Allowance for Credit Loss

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

	Year Ended December 31
(in millions of U.S. dollars)	2022		2021
Valuation allowance for uncollectible reinsurance - beginning of period	$	329	$	314
Provision for uncollectible reinsurance	43		66
Write-offs charged against the valuation allowance	(19)		(50)
Foreign exchange revaluation	(2)		(1)
Valuation allowance for uncollectible reinsurance - end of period	$	351	$	329

Reinsurance Recoverable, Credit Quality Indicator

The following tables present a listing, at December 31, 2022, of the categories of Chubb's reinsurers:

December 31, 2022	Gross Reinsurance Recoverable on Losses and Loss Expenses		Valuation allowance for Uncollectible Reinsurance		% of Gross Reinsurance Recoverable
(in millions of U.S. dollars, except for percentages)
Categories
Largest reinsurers	$	10,826	$	114	1.1	%
Other reinsurers rated A- or better	4,161		47		1.1	%
Other reinsurers rated lower than A- or not rated	443		70		15.8	%
Pools	425		14		3.3	%
Structured settlements	507		11		2.2	%
Captives	2,455		13		0.5	%
Other	435		82		18.8	%
Total	$	19,252	$	351	1.8	%