Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Issuance of common stock under stock option and benefit plans, shares	2.1	1.5	1.6
Issuance of common stock under stock option and benefit plans, excess income tax benefit	$ 6	$ 1	$ 6
Repurchase and retirement of common stock, shares	4.8	2.1	11.8
Cash dividends declared, per share of common stock	$ 1.10	$ 0.9025	$ 0.7525