Credit facility covenant leverage ratio multiple for required prepayment.

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- Definition

Debt Instrument, Capitalized Fee Amount

+ References

No definition available.

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- Definition

Debt Instrument, Floor Interest Rate

+ References

No definition available.

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- Definition

Letter of credit maximum sublimit amount.

+ References

No definition available.

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- Definition

Percent of Consolidated Excess Cash Flow required for Prepayment

+ References

No definition available.

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- Definition

Unrestricted Cash and Cash Equivalents

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

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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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(1)(a))
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- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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-Name Accounting Standards Codification
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Debt (Narrative) (Details) - USD ($)			12 Months Ended
Debt (Narrative) (Details) - USD ($)	Feb. 27, 2017	Apr. 01, 2016	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Maximum unrestricted cash and cash equivalents for leverage ratio calculation			$ 100,000,000
Required prepayment amount, percent of consolidated excess cash flow			50.00%
Long-term debt outstanding			$ 858,100,000	$ 883,100,000
ARC [Member]
Debt Instrument [Line Items]
Amount outstanding			$ 0
Minimum [Member]
Debt Instrument [Line Items]
Credit facility covenant leverage ratio multiple for required prepayment			3.5
Letter of Credit [Member]
Debt Instrument [Line Items]
Credit facility amount			$ 53,300,000
Line of credit availability			204,600,000
Term Loan A [Member]
Debt Instrument [Line Items]
Line of credit availability			$ 600,000,000
Maturity date			Mar. 01, 2021
Long-term debt outstanding			$ 577,500,000	600,000,000
Term Loan A [Member] \| LIBOR
Debt Instrument [Line Items]
Interest rate spread			2.00%
Term Loan B [Member]
Debt Instrument [Line Items]
Line of credit availability			$ 250,000,000
Floor interest rate			0.75%
Maturity date			Nov. 01, 2023
Bank, legal and other fees	$ 600,000
Long-term debt outstanding			$ 245,600,000	$ 248,100,000
Term Loan B [Member] \| LIBOR
Debt Instrument [Line Items]
Interest rate spread	2.75%		2.75%	3.25%
Bi-lateral Facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Credit facility amount			$ 17,100,000
Line of credit availability			25,000,000
Tax Exempt Bonds Due 2041 [Member]
Debt Instrument [Line Items]
Long-term debt outstanding			35,000,000	$ 35,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit availability			200,000,000
Letter of credit maximum sublimit			$ 150,000,000
Maturity date			Mar. 01, 2021
Revolving Credit Facility [Member] \| LIBOR
Debt Instrument [Line Items]
Interest rate spread			2.00%
Securitization Facility [Member]
Debt Instrument [Line Items]
Credit facility amount			$ 40,000,000
Maturity date			Mar. 01, 2019
Securitization Facility [Member] \| ARC [Member]
Debt Instrument [Line Items]
Ownership interest			100.00%
Securitization Facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Credit facility amount			$ 36,200,000
Line of credit availability			29,600,000
Letters of credits issued classified as restricted cash			6,600,000	$ 4,000,000
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility amount			$ 1,050,000,000
April 2016 Refinancing [Member]
Debt Instrument [Line Items]
Bank, legal and other fees		$ 9,300,000
Unamortized debt financing costs written off		1,100,000
April 2016 Refinancing [Member] \| Long-term Debt [Member]
Debt Instrument [Line Items]
Fees capitalized and amortized into interest expense		$ 8,100,000