SCHEDULE II - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Balance Sheets) (Details) - USD ($) $ in Millions		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Derivative investments		$ 1,107	$ 915
Other investments		2,255	2,296
Cash and invested cash		2,345	1,628	$ 2,722	$ 3,146
Other assets		15,713	6,082
Total assets		298,147	281,763
Liabilities
Short-term debt			450
Long-term debt		5,839	4,894
Payables for collateral on investments		4,805	4,417
Other liabilities		12,696	5,547
Total liabilities		283,797	264,441
Contingencies and Commitments (See Note 14)
Stockholders' Equity
Preferred stock - 10,000,000 shares authorized
Common stock - 800,000,000 shares authorized		5,392	5,693
Retained earnings		8,551	8,399
Accumulated other comprehensive income (loss)		407	3,230
Total stockholders' equity		14,350	17,322	14,478
Total Liabilities and Stockholders' Equity		298,147	281,763
Parent Company [Member]
Assets
Investments in subsidiaries	[1]	18,251	20,488
Derivative investments		92	187
Other investments		90	77
Cash and invested cash		420	620	$ 611	$ 681
Loans and accrued interest to subsidiaries	[1]	2,376	2,328
Other assets		59	16
Total assets		21,288	23,716
Liabilities
Common dividends payable		76	72
Short-term debt			450
Long-term debt		5,839	4,894
Loans from subsidiaries	[1]	553	476
Payables for collateral on investments		21	65
Other liabilities		449	437
Total liabilities		6,938	6,394
Contingencies and Commitments (See Note 14)
Stockholders' Equity
Preferred stock - 10,000,000 shares authorized
Common stock - 800,000,000 shares authorized		5,392	5,693
Retained earnings		8,551	8,399
Accumulated other comprehensive income (loss)		407	3,230
Total stockholders' equity		14,350	17,322
Total Liabilities and Stockholders' Equity		$ 21,288	$ 23,716

[1] Eliminated in consolidation.