Shares And Stockholders' Equity (Schedule of Reclassifications Out Of AOCI) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)	$ (212,000,000)	$ (513,000,000)	$ (610,000,000)
Net investment income	6,115,000,000	5,510,000,000	5,223,000,000
Interest and debt expense	(270,000,000)	(284,000,000)	(326,000,000)
Commissions and other expenses	(5,791,000,000)	(5,064,000,000)	(5,287,000,000)
Income (loss) from continuing operations before taxes	1,638,000,000	423,000,000	919,000,000
Income tax benefit (expense)	(233,000,000)	76,000,000	(33,000,000)
Net income (loss)	1,405,000,000	499,000,000	886,000,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)	(9,000,000)	(53,000,000)	(28,000,000)
Income (loss) from continuing operations before taxes	(33,000,000)	(21,000,000)	(40,000,000)
Income tax benefit (expense)	7,000,000	4,000,000	8,000,000
Net income (loss)	(26,000,000)	(17,000,000)	(32,000,000)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on AFS Securities [Member] | Associated amortization of DAC, VOBA, DSI and DFEL [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)	(24,000,000)	32,000,000	(12,000,000)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized OTTI on AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			4,000,000
Income (loss) from continuing operations before taxes			4,000,000
Income tax benefit (expense)			(1,000,000)
Net income (loss)			3,000,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating income expense	26,000,000	48,000,000	42,000,000
Income (loss) from continuing operations before taxes	25,000,000	47,000,000	41,000,000
Income tax benefit (expense)	(5,000,000)	(10,000,000)	(9,000,000)
Net income (loss)	20,000,000	37,000,000	32,000,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member] | Interest Rate Contracts [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment income	3,000,000	2,000,000	3,000,000
Interest and debt expense	(23,000,000)	(16,000,000)	(5,000,000)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member] | Foreign currency contracts [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)	(2,000,000)	6,000,000	9,000,000
Net investment income	48,000,000	56,000,000	35,000,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member] | Associated amortization of DAC, VOBA, DSI and DFEL [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Commissions and other expenses	$ (1,000,000)	$ (1,000,000)	$ (1,000,000)