CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (705)	$ (306)	$ 787	$ (617)
Other comprehensive income (loss) net of income taxes:
Change in unrealized gains (losses), net of reclassification adjustment	229	746	3,273	2,874
Changes in defined benefit plan related items not yet recognized in periodic benefit cost, net of reclassification adjustment	21	18	71	85
Foreign currency translation adjustment	16	(12)	1	(12)
Total other comprehensive income (loss), net of income taxes	266	752	3,345	2,947
Comprehensive income (loss)	(439)	446	4,132	2,330
Less: Comprehensive income (loss) attributable to the noncontrolling interest	80	63	198	194
Comprehensive income (loss) attributable to Holdings	$ (519)	$ 383	$ 3,934	$ 2,136