Consolidated Statements of Stockholders' Equity (USD $) In Millions, except Share data, unless otherwise specified	Total	Common Stock	Capital in Excess of Par Value	Common Stock in Treasury	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Beginning balance at Dec. 31, 2010	$ 1,976	$ 202	$ 194	$ (2,051)	$ 3,536	$ 95
Beginning balance (in shares) at Dec. 31, 2010		202,000,000		80,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	457				457
Other comprehensive income	(65)					(65)
Cash dividends	(86)				(86)
Exercise of stock options	37		21	16
Exercise of stock options (in shares)		0		(1,000,000)
Restricted stock unit grant	7		3	4
Stock-based compensation expense	7		7	0
Stock repurchases	(134)		0	(134)
Stock repurchases (in shares)		0		2,000,000
Ending balance at Dec. 31, 2011	2,199	202	225	(2,165)	3,907	30
Ending balance (in shares) at Dec. 31, 2011		202,000,000		81,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	460				460
Other comprehensive income	39					39
Cash dividends	(97)				(97)
Exercise of stock options	54		36	18
Exercise of stock options (in shares)		0		(1,000,000)
Restricted stock unit grant	6		6	0
Stock-based compensation expense	9		9	0
Stock repurchases	(124)		0	(124)
Stock repurchases (in shares)	99,000,000	0		2,000,000
Ending balance at Dec. 31, 2012	2,546	202	276	(2,271)	4,270	69
Ending balance (in shares) at Dec. 31, 2012		202,000,000		82,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	491				491
Other comprehensive income	51					51
Cash dividends	(103)				(103)
Exercise of stock options	35		24	11
Exercise of stock options (in shares)	(788,982)	0		(1,000,000)
Restricted stock unit grant	6		7	(1)
Stock-based compensation expense	15		15
Stock repurchases	(146)			(146)
Stock repurchases (in shares)	101,000,000	0		2,000,000
Ending balance at Dec. 31, 2013	$ 2,895	$ 202	$ 322	$ (2,407)	$ 4,658	$ 120
Ending balance (in shares) at Dec. 31, 2013		202,000,000		83,000,000