Long-Term Debt (Term Loan) (Details) - Term Loan [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Debt Instrument [Line Items]
Face amount	$ 1,243,000
Due date	Oct. 01, 2019
Each Quarter through March 31, 2017 [Member]
Debt Instrument [Line Items]
Maximum funded debt to EBITDA ratio	625.00%
Each Quarter after March 31, 2017 [Member]
Debt Instrument [Line Items]
Maximum funded debt to EBITDA ratio	550.00%
Maximum funded debt to EBITDA ratio, subject to future acquisitions	600.00%
Maximum [Member]
Debt Instrument [Line Items]
Face amount	$ 2,035,000
Maximum [Member] | Applicable Margin on LIBOR Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
Maximum [Member] | Applicable Margin on Base Rate Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Minimum | Applicable Margin on LIBOR Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Minimum | Applicable Margin on Base Rate Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%