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