Long-Term Debt (Receivables Facility Narrative) (Details) (USD $)			6 Months Ended			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Receivables Facility, Name [Member] Receivables Facility [Member]	Dec. 31, 2013 Receivables Facility, Name [Member] Receivables Facility [Member]	Mar. 21, 2012 Receivables Facility, Name [Member] Receivables Facility [Member]	Jun. 30, 2014 March 7, 2013 Amendment [Member] Receivables Facility, Name [Member] Receivables Facility [Member]	Mar. 07, 2013 March 7, 2013 Amendment [Member] Receivables Facility, Name [Member] Receivables Facility [Member]	Jun. 30, 2014 March 31, 2014 Amendment [Member] Receivables Facility, Name [Member] Receivables Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Issuance Date			Mar. 21, 2012			Mar. 07, 2013
Debt Instrument, Maturity Date						Mar. 21, 2016
Maximum Borrowing Capacity of Receivables Facility					$ 300,000,000		$ 500,000,000	$ 700,000,000
Debt	16,931,000,000	9,453,000,000	607,000,000	500,000,000				607,000,000
Receivables included in the Receivables Facility								$ 1,200,000,000