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
Paid-In-Surplus [Member]
Tax Benefit, Stock-Based Employee Compensation	$ 28	$ 27	$ 24
Retained Earnings [Member]
Dividends Declared Per Share	$ 1.76	$ 1.64	$ 1.56