Condensed Consolidated Statements of Changes in Shareholder's Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Deficit)
Beginning Balance at Dec. 31, 2021	$ 5,080	$ 3	$ 3,191	$ 1,562	$ 324
Comprehensive income (loss):
Net income (loss)	84	0	0	0	84
Ending Balance at Jun. 30, 2022	1,447	3	2,778	(1,298)	(36)
Comprehensive income (loss):
Dividends	857	0	413	0	444
Other comprehensive income (loss), after tax	(2,860)	0	0	(2,860)	0
Comprehensive income (loss)	(2,776)
Beginning Balance at Mar. 31, 2022	3,612	3	3,191	90	328
Comprehensive income (loss):
Net income (loss)	32	0	0	0	32
Ending Balance at Jun. 30, 2022	1,447	3	2,778	(1,298)	(36)
Comprehensive income (loss):
Dividends	809	0	413	0	396
Other comprehensive income (loss), after tax	(1,388)	0	0	(1,388)	0
Comprehensive income (loss)	(1,356)
Beginning Balance at Dec. 31, 2022	927	3	2,778	(2,067)	213
Comprehensive income (loss):
Net income (loss)	190	0	0	0	190
Ending Balance at Jun. 30, 2023	1,005	3	2,770	(1,869)	101
Comprehensive income (loss):
Dividends	310	0	8	0	302
Other comprehensive income (loss), after tax	198	0	0	198	0
Comprehensive income (loss)	388
Beginning Balance at Mar. 31, 2023	1,411	3	2,778	(1,673)	303
Comprehensive income (loss):
Net income (loss)	100	0	0	0	100
Ending Balance at Jun. 30, 2023	1,005	3	2,770	(1,869)	101
Comprehensive income (loss):
Dividends	310	0	8	0	302
Other comprehensive income (loss), after tax	(196)	$ 0	$ 0	$ (196)	$ 0
Comprehensive income (loss)	$ (96)