Separate Accounts (Net Amount at Risk and Cash Surrender Values) (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	$ 86,379		$ 85,618
Separate account liabilities	80,821	$ 85,528	82,524
Universal Life Insurance
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	2,629	2,627	2,597	$ 2,590
Separate account liabilities	6,497		6,125
Total account balances	9,126		8,722
Net amount at risk	30,963		32,855
Cash surrender value	8,564		8,130
Variable Annuities
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	3,310	3,403	3,730	3,833
Separate account liabilities	71,698	75,918	73,889	77,151
Total account balances	75,008		77,619
Net amount at risk	12,673		13,271
Cash surrender value	74,675		77,248
Index-linked Annuities
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	51,607	52,594	47,896	48,605
Separate account liabilities	0		0
Total account balances	51,607		47,896
Cash surrender value	51,576		46,235
Fixed Rate Annuities
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	12,971	13,252	14,516	14,665
Separate account liabilities	0		0
Total account balances	12,971		14,516
Cash surrender value	13,006		14,248
ULSG
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	4,388	4,461	4,710	4,779
Separate account liabilities	0		0
Total account balances	4,388		4,710
Net amount at risk	61,312		63,157
Cash surrender value	3,990		4,269
Company-Owned Life Insurance
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	647	646	673	1,166
Separate account liabilities	2,336	$ 2,457	2,249	$ 1,808
Total account balances	2,983		2,922
Net amount at risk	2,530		2,607
Cash surrender value	$ 2,780		$ 2,692