Statements of Equity - USD ($) $ in Millions	Total	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2018					$ 5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (45)
Ending balance at Dec. 31, 2019		$ 414			(40)	$ 48
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(10)
Other comprehensive income (loss)	88
Ending balance at Dec. 31, 2020	781	781	$ 3	$ 692	(50)	136
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2)
Other comprehensive income (loss)	(71)
Ending balance at Mar. 31, 2021		709		693	(52)	65
Beginning balance at Dec. 31, 2020	781	781	3	692	(50)	136
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(17)
Other comprehensive income (loss)	(34)
Ending balance at Jun. 30, 2021	667	667	3	628	(66)	102
Beginning balance at Dec. 31, 2020	781	781	3	692	(50)	136
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividend	(64)			(64)
Net income (loss)	(17)				(17)
Other comprehensive income (loss)	(39)					(39)
Ending balance at Sep. 30, 2021	661		3	628	(67)	97
Beginning balance at Dec. 31, 2020	781	781	3	692	(50)	136
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(20)
Other comprehensive income (loss)	(50)
Ending balance at Dec. 31, 2021	699	699	3	680	(70)	86
Beginning balance at Mar. 31, 2021		709		693	(52)	65
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(15)
Other comprehensive income (loss)	37
Ending balance at Jun. 30, 2021	667	667	3	628	(66)	102
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividend	0			0
Net income (loss)	(1)				(1)
Other comprehensive income (loss)	(5)					(5)
Other	0			0
Ending balance at Sep. 30, 2021	661		3	628	(67)	97
Beginning balance at Dec. 31, 2021	699	699	3	680	(70)	86
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(20)
Other comprehensive income (loss)	(150)
Ending balance at Mar. 31, 2022		530		681	(90)	(64)
Beginning balance at Dec. 31, 2021	699	699	3	680	(70)	86
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(35)
Other comprehensive income (loss)	(287)
Ending balance at Jun. 30, 2022	379	379	3	682	(105)	(201)
Beginning balance at Dec. 31, 2021	699	699	3	680	(70)	86
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent	100	100
Net income (loss)	(24)				(24)
Other comprehensive income (loss)	(394)					(394)
Other	3			3
Ending balance at Sep. 30, 2022	384		3	783	(94)	(308)
Beginning balance at Mar. 31, 2022		530		681	(90)	(64)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(15)
Ending balance at Jun. 30, 2022	379	379	3	682	(105)	(201)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent	100	$ 100
Net income (loss)	11				11
Other comprehensive income (loss)	(107)					(107)
Other	1			1
Ending balance at Sep. 30, 2022	$ 384		$ 3	$ 783	$ (94)	$ (308)