CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income (Loss)	Stockholders' Equity Attributable to Parent	Noncontrolling Interest
Beginning balance at Dec. 31, 2018	$ 5,253	$ 446	$ (585)	$ 8,781	$ (2,511)	$ (913)	$ 5,218	$ 35
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(70)				(61)	(9)	(70)
Dividends declared on common stock	(196)			(196)			(196)
Equity compensation, net of tax	17	1	(4)	20			17
Ending balance at Jun. 30, 2019	5,004	447	(589)	8,605	(2,572)	(922)	4,969	35
Beginning balance at Mar. 31, 2019	4,983	447	(588)	8,688	(2,662)	(937)	4,948	35
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	105				90	15	105
Dividends declared on common stock	(98)			(98)			(98)
Equity compensation, net of tax	14		(1)	15			14
Ending balance at Jun. 30, 2019	5,004	447	(589)	8,605	(2,572)	(922)	4,969	35
Beginning balance at Dec. 31, 2019	4,996	447	(590)	8,430	(2,404)	(920)	4,963	33
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(1,287)				(1,201)	(86)	(1,287)
Dividends declared on common stock	(195)			(195)			(195)
Equity compensation, net of tax	11	1	(7)	17			11
Distribution to non-controlling interests holder	(3)							(3)
Other	(6)							(6)
Ending balance at Jun. 30, 2020	3,516	448	(597)	8,252	(3,605)	(1,006)	3,492	24
Beginning balance at Mar. 31, 2020	3,479	448	(596)	8,340	(3,683)	(1,055)	3,454	25
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	127				78	49	127
Dividends declared on common stock	(98)			(98)			(98)
Equity compensation, net of tax	9		(1)	10			9
Other	(1)							(1)
Ending balance at Jun. 30, 2020	$ 3,516	$ 448	$ (597)	$ 8,252	$ (3,605)	$ (1,006)	$ 3,492	$ 24

Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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