Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Parent	Non-controlling Interest	Cumulative effect of adoption	Cumulative effect of adoption Retained Earnings	Cumulative effect of adoption Parent
Beginning balance at Dec. 31, 2018	$ 12,359	$ 2	$ 7,807	$ 5,039	$ (501)	$ 12,347	$ 12
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividend to parent company	(1,005)			(1,005)		(1,005)
Net income (loss)	(1,889)			(1,889)		(1,889)
Other comprehensive income (loss)	2,097				2,097	2,097
Other	3		2			2	1
Ending balance at Dec. 31, 2019	$ 11,565	2	7,809	2,145	1,596	11,552	13	$ (32)	$ (32)	$ (32)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting standards update [extensible enumeration]	Accounting Standards Update 2016-13
Dividend to parent company	$ (2,149)			(2,149)		(2,149)
Net income (loss)	(760)			(759)		(759)	(1)
Other comprehensive income (loss)	2,999				2,999	2,999
Other	20		32			32	(12)
Ending balance at Dec. 31, 2020	11,643	2	7,841	(795)	4,595	11,643	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividend to parent company	(8)			(8)		(8)
Capital contribution from parent company	750		750			750
Net income (loss)	(1,396)			(1,396)		(1,396)
Other comprehensive income (loss)	(2,238)				(2,238)	(2,238)
Other	(45)		(45)			(45)
Ending balance at Dec. 31, 2021	$ 8,706	$ 2	$ 8,546	$ (2,199)	$ 2,357	$ 8,706	$ 0