Segment Information (Reconciliation of Assets from Segment to Consolidated) (Details) - USD ($)		Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	$ 118,675,000,000		$ 97,623,000,000		$ 84,904,000,000
Corporate And Other Segment Reporting Information [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	6,881,000,000		4,993,000,000		1,942,000,000
Other Operating Segment | JAPAN
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets		15.9		11,900,000,000		10,100,000,000
Life Insurance Product Line [Member] | Other Operating Segment | Americas [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	27,190,000,000		24,320,000,000		22,612,000,000
Life Insurance Product Line [Member] | Other Operating Segment | CANADA
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	5,069,000,000		5,111,000,000		4,826,000,000
Life Insurance Product Line [Member] | Other Operating Segment | EMEA [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	5,029,000,000		4,334,000,000		3,652,000,000
Life Insurance Product Line [Member] | Other Operating Segment | Asia Pacific [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	10,488,000,000	[2]	9,925,000,000	[3]	9,254,000,000	[4]
Insurance, Other [Member] | Other Operating Segment | Americas [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	29,768,000,000		28,385,000,000		25,203,000,000
Insurance, Other [Member] | Other Operating Segment | CANADA
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	5,240,000,000		219,000,000		177,000,000
Insurance, Other [Member] | Other Operating Segment | EMEA [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	7,826,000,000		5,656,000,000		5,215,000,000
Insurance, Other [Member] | Other Operating Segment | Asia Pacific [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	$ 21,184,000,000	[2]	$ 14,680,000,000	[3]	$ 12,023,000,000	[4]

[1] Capital expenditures of each reporting segment were immaterial.

[2] Asia Pacific total assets include $15.9 billion of assets from the Company’s Japan operations.

[3] Asia Pacific total assets include $11.9 billion of assets from the Company’s Japan operations.

[4] Asia Pacific total assets include $10.1 billion of assets from the Company’s Japan operations.