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	$ 85,620		$ 84,799
Separate account liabilities	74,551	$ 78,825	76,257
Universal Life Insurance
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	2,083	2,074	2,034	$ 2,028
Separate account liabilities	2,556		2,383
Total account balances	4,639		4,417
Net amount at risk	19,651		20,743
Cash surrender value	4,452		4,208
Variable Annuities
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	3,179	3,265	3,570	3,667
Separate account liabilities	69,397	73,416	71,389	74,483
Total account balances	72,576		74,959
Net amount at risk	12,611		13,202
Cash surrender value	72,248		74,592
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	2,327	$ 2,447	2,241	$ 1,799
Total account balances	2,974		2,914
Net amount at risk	2,522		2,599
Cash surrender value	$ 2,770		$ 2,684