Condensed Consolidated Statement of Equity (Deficit) - USD ($) $ in Millions	Total	Common Stock [Member]	Paid-in Capital [Member]	Treasury Stock [Member]	Notes Receivable From Parent [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]	Parent [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2018	$ (2,914)	$ 1	$ 526	$ (296)	$ 0	$ (18)	$ (3,125)	$ (2,912)	$ (2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(160)	0	0	0	0	0	(160)	(160)	1
Other comprehensive income	(8)	0	0	0	0	(8)	0	(8)	0
Balance at Jun. 30, 2019	(3,081)	1	526	(296)	0	(26)	(3,285)	(3,080)	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Return of Capital from parent	0
Net Income (Loss) Attributable to Parent	(159)
Balance at Mar. 31, 2019	(2,966)	1	526	(296)	0	(18)	(3,177)	(2,964)	(2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(108)	0	0	0	0	0	(108)	(108)	1
Other comprehensive income	(8)	0	0	0	0	(8)	0	(8)	0
Balance at Jun. 30, 2019	(3,081)	1	526	(296)	0	(26)	(3,285)	(3,080)	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent	(107)
Balance at Dec. 31, 2019	1,075	0	1,165	0	0	(1)	(89)	1,075	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(101)	0	0	0	0	0	(101)	(101)	0
Other comprehensive income	(54)	0	0	0	0	(54)	0	(54)	0
Due from Officers or Stockholders, Noncurrent	(10)	0	0	0	(10)	0	0	(10)	0
Balance at Jun. 30, 2020	919	0	1,164	0	0	(55)	(190)	919	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee Benefits and Share-based Compensation	9	0		0	0	0	0	9	0
Settlement of affiliate loan	10	0	0	0	10	0	0	10	0
Return of Capital from parent	(10)	0	(10)	0	0	0	0	(10)	0
Net Income (Loss) Attributable to Parent	(101)
Balance at Mar. 31, 2020	954	0	1,170	0	(10)	(58)	(148)	954	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(42)	0	0	0	0	0	(42)	(42)	0
Other comprehensive income	3	0	0	0	0	3	0	3	0
Balance at Jun. 30, 2020	919	0	1,164	0	0	(55)	(190)	919	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee Benefits and Share-based Compensation	4	0		0	0	0	0	4	0
Settlement of affiliate loan	10	0	0	0		0	0	10	0
Return of Capital from parent	(10)	$ 0	$ (10)	$ 0	$ 0	$ 0	$ 0	$ (10)	$ 0
Net Income (Loss) Attributable to Parent	$ (42)