SCHEDULE II - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Derivative investments	$ 3,109	$ 1,911
Other investments	3,984	2,994
Cash and invested cash	1,708	2,563	$ 2,345	$ 1,628
Other assets	15,960	16,170
Total assets	365,948	334,761
Liabilities
Short-term debt		300
Long-term debt	6,682	6,067
Payables for collateral on investments	6,222	5,082
Other liabilities	13,823	13,482
Total liabilities	343,249	315,072
Contingencies and Commitments
Stockholders' Equity
Preferred stock - 10,000,000 shares authorized
Common stock - 800,000,000 shares authorized	5,082	5,162
Retained earnings	8,686	8,854
Accumulated other comprehensive income (loss)	8,931	5,673
Total stockholders' equity	22,699	19,689	14,350
Total Liabilities and Stockholders' Equity	365,948	334,761
Parent Company [Member]
Assets
Investments in subsidiaries	27,677	24,029
Other investments	933	382
Cash and invested cash	114	577	$ 420	$ 620
Loans and accrued interest to subsidiaries	2,960	2,446
Other assets	83	28
Total assets	31,767	27,462
Liabilities
Common stock dividends payable	81	79
Derivative investments liability	552	110
Short-term debt		300
Long-term debt	6,682	6,067
Loans from subsidiaries	1,424	844
Payables for collateral on investments	7	6
Other liabilities	322	367
Total liabilities	9,068	7,773
Contingencies and Commitments
Stockholders' Equity
Preferred stock - 10,000,000 shares authorized
Common stock - 800,000,000 shares authorized	5,082	5,162
Retained earnings	8,686	8,854
Accumulated other comprehensive income (loss)	8,931	5,673
Total stockholders' equity	22,699	19,689
Total Liabilities and Stockholders' Equity	$ 31,767	$ 27,462