CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Stock options Common Stock [Member]	Stock Units [Member] Common Stock [Member]
Common stock, shares issued (in shares)		366
Stockholders' Equity Attributable to Parent	$ 2,233	$ 18	$ 27	$ 2,140	$ 48
Net income (loss)	(18)			(18)
Other Comprehensive Income (Loss), Net of Tax	5				5
Stock Issued During Period, Shares, Other						0	2
Stock Issued During Period, Value, Other	7	0	7
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	(10)	$ 0	(10)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 23		23
Common Stock, Dividends, Per Share, Declared	$ 0.15
Dividends, Cash	$ (55)			(55)
Common stock, shares issued (in shares)	368	368
Stockholders' Equity Attributable to Parent	$ 2,185	$ 18	47	2,067	53
Common stock, shares issued (in shares)	372	372
Stockholders' Equity Attributable to Parent	$ 2,595	$ 19	113	2,420	43
Net income (loss)	158			158
Other Comprehensive Income (Loss), Net of Tax	4				4
Stock Issued During Period, Shares, Other						1	2
Stock Issued During Period, Value, Other	10	0	10
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	(31)	$ 0	(31)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 27		27
Common Stock, Dividends, Per Share, Declared	$ 0.15
Dividends, Cash	$ (56)			(56)
Common stock, shares issued (in shares)	375	375
Stockholders' Equity Attributable to Parent	$ 2,707	$ 19	$ 119	$ 2,522	$ 47