Federal Income Taxes (Significant Components Of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred Tax Assets
Future contract benefits and other contract holder funds	$ 649	$ 795
Reinsurance related embedded derivative asset	1	12
Compensation and benefit plans	179	182
Intangibles	40
Tax credits	0	76
Net operating losses	264
Other	56	7
Total deferred tax assets	1,189	1,072
Deferred Tax Liabilities
DAC	1,339	1,080
VOBA	305	108
Net unrealized gain on AFS securities	338	1,643
Net unrealized gain on trading securities	27	41
Intangibles		9
Investment activity	332	96
Other	6	190
Total deferred tax liabilities	2,347	3,167
Net deferred tax asset (liability)	$ (1,158)	$ (2,095)