Additional Deferred Finance Fees

No definition available.

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- Definition

Debt Instrument, Additional Interest above Base Rate

+ References

No definition available.

+ Details

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- Definition

Debt instrument interest additional interest above federal fund rate.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Payment Terms, Period Principal Payments are Deferred

+ References

No definition available.

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- Definition

Debt, Long-term and Short-term, Combined Amount, Gross

+ References

No definition available.

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- Definition

Floating Euro Dollar Base Rate

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

The average effective interest rate during the reporting period.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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- Definition

The effective interest rate at the end of the reporting period.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Debt - Borrowings (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Debt - Borrowings (Details) - USD ($)	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2012	Dec. 31, 2017
Debt Instrument [Line Items]
Principal amount outstanding	$ 2,464,455,000	$ 2,464,455,000		$ 3,323,062,000
Less: deferred financing fees	(33,617,000)	(33,617,000)		(44,217,000)
Net balance sheet carrying amount	$ 2,430,838,000	$ 2,430,838,000		3,278,845,000
Average annual effective rate	4.28%	4.20%
Revolving credit facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 270,000,000	$ 270,000,000		595,000,000
Contractual annualized interest rate	4.09%	4.09%
Floating eurodollar base rate	2.09%	2.09%
Debt instrument interest additional interest above base rate		2.00%
Line of credit facility, remaining borrowing capacity	$ 906,000,000	$ 906,000,000
Bank Term Loan - A Facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,392,188,000	$ 1,392,188,000		1,429,312,000
Contractual annualized interest rate	4.09%	4.09%
Floating eurodollar base rate	2.09%	2.09%
Debt instrument interest additional interest above base rate		2.00%
Bank Term Loan - B Facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	$ 0		496,250,000
Contractual annualized interest rate	3.88%	3.88%
Floating eurodollar base rate	1.88%	1.88%
Debt instrument interest additional interest above base rate		2.00%
Additional deferred finance fees	$ 6,900,000
Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 800,000,000	$ 800,000,000		800,000,000
Debt instrument, fixed interest rate	5.125%	5.125%
Connecticut Economic Development Program
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,267,000	$ 2,267,000	$ 2,500,000.0	$ 2,500,000
Debt instrument, fixed interest rate			3.00%
Debt instrument term			10 years
Debt instrument, period principal payments are deferred			5 years
2016 Agreement \| Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument interest additional interest above federal funds rate		0.50%