SCHEDULE II - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Balance Sheets) (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Derivative investments		$ 1,911	$ 1,107
Other investments		2,994	2,267
Cash and invested cash		2,563	2,345	$ 1,628	$ 2,722
Other assets		16,170	15,713
Total assets		334,761	298,147
Liabilities
Short-term debt		300
Long-term debt		6,067	5,839
Payables for collateral on investments		5,082	4,805
Other liabilities		13,482	12,696
Total liabilities		315,072	283,797
Contingencies and Commitments (See Note 8)
Stockholders' Equity
Preferred stock - 10,000,000 shares authorized
Common stock - 800,000,000 shares authorized		5,162	5,392
Retained earnings		8,854	8,551
Accumulated other comprehensive income (loss)		5,673	407
Total stockholders' equity		19,689	14,350	17,322
Total Liabilities and Stockholders' Equity		334,761	298,147
Parent Company [Member]
Assets
Investments in subsidiaries	[1]	24,029	18,251
Derivative investments			92
Other investments		382	90
Cash and invested cash		577	420	$ 620	$ 611
Loans and accrued interest to subsidiaries	[1]	2,446	2,376
Other assets		28	59
Total assets		27,462	21,288
Liabilities
Common dividends payable		79	76
Derivative investments liability		110
Short-term debt		300
Long-term debt		6,067	5,839
Loans from subsidiaries	[1]	844	553
Payables for collateral on investments		6	21
Other liabilities		367	449
Total liabilities		7,773	6,938
Contingencies and Commitments (See Note 8)
Stockholders' Equity
Preferred stock - 10,000,000 shares authorized
Common stock - 800,000,000 shares authorized		5,162	5,392
Retained earnings		8,854	8,551
Accumulated other comprehensive income (loss)		5,673	407
Total stockholders' equity		19,689	14,350
Total Liabilities and Stockholders' Equity		$ 27,462	$ 21,288

[1] Eliminated in consolidation.