Share Repurchase Programs and Dividends (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Summary of Cash Dividends Declared

Our Board of Directors declared the following cash dividends:

Year Ended December 31	Period	Per share		For stockholders of record as of	Payable on	Cash paid (millions)
2016	Fourth Quarter	$	0.10	November 7, 2016	November 21, 2016	$	52
	Third Quarter		0.10	August 5, 2016	August 19, 2016		53
	Second Quarter		0.10	May 4, 2016	May 18, 2016		58
	First Quarter		0.10	February 10, 2016	February 24, 2016		61
	Total	$	0.40			$	224
2015	Fourth Quarter	$	0.10	November 5, 2015	November 19, 2015	$	72
	Third Quarter		0.10	August 10, 2015	August 24, 2015		66
	Second Quarter		0.10	May 4, 2015	May 18, 2015		70
	First Quarter		0.10	February 9, 2015	February 23, 2015		70
	Total	$	0.40			$	278
2014	Fourth Quarter	$	0.10	November 3, 2014	November 17, 2014	$	72
	Third Quarter		0.10	August 4, 2014	August 18, 2014		72
	Total	$	0.20			$	144