Short-Term Borrowings and Borrowing Arrangements (Details) (Revolving Credit Facility [Member], USD $)	12 Months Ended		12 Months Ended				12 Months Ended
	Dec. 31, 2013 Option	Sep. 30, 2013	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Credit Agreement [Member]	Dec. 31, 2012 Credit Agreement [Member]	Dec. 31, 2013 London Interbank Offered Rate (LIBOR) [Member] Credit Agreement [Member]
Short-term Debt [Line Items]
Short-term borrowings					$ 0	$ 0
Credit line available under the credit agreement					3,000,000,000
Maximum borrowing capacity	$ 3,000,000,000	$ 3,000,000,000
Term of debt					5 years
Credit agreement expiration date	Aug. 19, 2018
Number of extension available for the credit agreement	2
Term of extension	1 year
Interest rate for borrowing							1.25%
Ratio of debt to consolidated EBITDA	1.7		3
Ratio of consolidated EBITDA to consolidated interest expense	8.4			4