Consolidated Statement of Shareholder's Interest - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2021	Jan. 01, 2020	Dec. 31, 2019
Total shareholder’s interest	$ 11,877,000,000	$ 12,398,000,000	$ 15,567,000,000			$ 16,389,000,000
Shareholder's Interest [Roll Forward]
Balance at beginning of period	12,376,000,000
Net income	1,989,000,000	4,521,000,000	2,338,000,000
Other comprehensive income/(loss), net of tax	(327,000,000)	(212,000,000)	372,000,000
Stockholders' Equity, Other	(83,000,000)
Balance at end of period	11,877,000,000	12,376,000,000
Stockholders' interest attributable to noncontrolling interest	0	22,000,000
Shareholder's Interest [Member]
Shareholder's Interest [Roll Forward]
Balance at beginning of period	5,227,000,000	5,227,000,000	5,227,000,000
Other comprehensive income/(loss), net of tax	0	0	0
Distributions declared	0	0	0
Stockholders' Equity, Other	(61,000,000)	0
Balance at end of period	5,166,000,000	5,227,000,000	5,227,000,000
Accumulated Other Comprehensive Income/(Loss) (Note11) [Member]
Shareholder's Interest [Roll Forward]
Balance at beginning of period	(690,000,000)	(478,000,000)	(850,000,000)
Net income	0	0	0
Other comprehensive income/(loss), net of tax	(327,000,000)	(212,000,000)	372,000,000
Distributions declared	0	0	0
Stockholders' Equity, Other	0	0
Balance at end of period	(1,017,000,000)	(690,000,000)	(478,000,000)
Retained Earnings [Member]
Shareholder's Interest [Roll Forward]
Balance at beginning of period	7,839,000,000	10,818,000,000	12,012,000,000
Net income	1,989,000,000	4,521,000,000	2,338,000,000
Other comprehensive income/(loss), net of tax	0	0	0
Distributions declared	2,100,000,000	7,500,000,000	3,290,000,000
Stockholders' Equity, Other	0	0
Balance at end of period	7,728,000,000	7,839,000,000	10,818,000,000
Parent [Member]
Total shareholder’s interest			15,567,000,000			16,389,000,000
Shareholder's Interest [Roll Forward]
Balance at beginning of period	12,376,000,000
Net income	0	0	0
Distributions declared	(2,100,000,000)	(7,500,000,000)	(3,290,000,000)
Stockholders' Equity, Other	61,000,000	0
Balance at end of period	11,877,000,000	12,376,000,000
Noncontrolling Interest [Member]
Total shareholder’s interest			0
Shareholder's Interest [Roll Forward]
Net income	0	0	0
Other comprehensive income/(loss), net of tax	0	0	0
Distributions declared	0	0	0
Stockholders' Equity, Other	(22,000,000)	22,000,000
Stockholders' interest attributable to noncontrolling interest	$ 0	$ 22,000,000				$ 0
Accounting Standards Update 2016-13 [Member]
Total shareholder’s interest			(242,000,000)
Accounting Standards Update 2016-13 [Member] | Shareholder's Interest [Member]
Total shareholder’s interest			0
Accounting Standards Update 2016-13 [Member] | Accumulated Other Comprehensive Income/(Loss) (Note11) [Member]
Total shareholder’s interest			0
Accounting Standards Update 2016-13 [Member] | Retained Earnings [Member]
Total shareholder’s interest			$ (242,000,000)		$ 202
Accounting Standards Update 2019-12 [Member] | Retained Earnings [Member]
Total shareholder’s interest				$ 40