Acquisitions (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Apr. 01, 2025	Jun. 30, 2025		Jun. 30, 2025		Dec. 31, 2024
Business Combination [Line Items]
Goodwill		$ 20,184	[1]	$ 20,184	[1]	$ 19,579
Other intangible assets		$ 6,391		$ 6,391		$ 6,377
Huatai Group
Business Combination [Line Items]
Subsidiary, Ownership Percentage, Parent		87.20%		87.20%
Additional percent ownership interest obtained in subsidiary		1.60%
Liberty Insurance, Vietnam [Member]
Business Combination [Line Items]
Business Combination, Date of Acquisition Agreement				Mar. 03, 2025
LMG Insurance, Thailand [Member]
Business Combination [Line Items]
Business Combination, Date of Acquisition Agreement				Mar. 03, 2025
Business Combination, Effective Date of Acquisition		Apr. 01, 2025
Payments to Acquire Businesses, Gross	$ 321
Goodwill	183
Other intangible assets	$ 57

[1] Includes $456 million attributable to noncontrolling interests.