Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

	2013 Quarter Ended
(In millions, except per share amounts)	Dec. 31		Sept. 30		June 30		Mar. 31
Revenue	$	1,033	$	965	$	960	$	879
Gross profit	410		384		371		334
Operating income	129		98		70		66
Net income	$	68	$	73	$	46	$	41
Earnings per share:
Basic	$	0.37	$	0.39	$	0.25	$	0.22
Diluted	$	0.37	$	0.39	$	0.25	$	0.22

	2012 Quarter Ended
(In millions, except per share amounts)	Dec. 31		Sept. 30		June 30		Mar. 31
Revenue	$	969	$	931	$	966	$	925
Gross profit	382		374		383		363
Operating income	104		111		129		99
Net income	$	73	$	72	$	89	$	63
Earnings per share:
Basic	$	0.39	$	0.39	$	0.48	$	0.34
Diluted	$	0.39	$	0.38	$	0.48	$	0.34