Long-Term Debt (Credit Facility as Amended, Amendments and Modifications Narrative) (Details) (USD $)	Dec. 31, 2014	Jan. 26, 2014	Jan. 27, 2014
Debt Instrument [Line Items]
Balance of Remaining Non-extended Term Loans	$ 16,898,000,000
Credit Facility, Term Loan B, Initial Funding [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Balance of Remaining Non-extended Term Loans		60,000,000
Credit Facility, Term Loans, March 6, 2012 Amendment [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		750,000,000
Credit Facility, Term Loan A, March 6, 2012 Amendment [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Balance of Remaining Non-extended Term Loans		637,000,000
Credit Facility, Revolving Credit Loans, March 6, 2012 [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		750,000,000
Credit Facility, Revolving Credit Loans, Third Amendment and Restatement [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			1,000,000,000
Credit Facility, Term Loan A, Third Amendment and Restatement [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			1,000,000,000
Credit Facility, Term Loan D, Third Amendment and Restatement [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			4,600,000,000
Credit Facility, Term Loan E, Third Amendment and Restatement [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 1,700,000,000