Face (par) amount of debt instrument at time of issuance.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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.

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Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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Balance Type:	debit
Period Type:	duration

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Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
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Long-term Debt - Senior Secured Credit Facilities, Senior Unsecured Notes, Loss on Early Extinguishment of Debt, and Covenants (Details) - USD ($)		3 Months Ended	9 Months Ended
	Jan. 19, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2019	Oct. 15, 2018
Debt Instrument [Line Items]
Interest rate				5.625%
Secured credit facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt term	5 years
Maximum borrowing capacity	$ 700,000,000
Letters of credit outstanding				$ 30,000,000.0
Secured credit facility \| Term Loan A Facility
Debt Instrument [Line Items]
Debt term	5 years
Maximum borrowing capacity	$ 300,000,000
Secured credit facility \| Term Loan B Facility
Debt Instrument [Line Items]
Debt term	7 years
Maximum borrowing capacity	$ 500,000,000
Secured credit facility \| Term Loan A Facility due 2023, incremental loans
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 430,200,000
Secured credit facility \| Term Loan B-1 Facility due 2025
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 1,128,800,000
Secured credit facility \| 2013 Senior Secured Credit Facilities
Debt Instrument [Line Items]
Loss on early extinguishment of debt		$ 300,000	$ 3,800,000
Senior notes \| 5.625% Notes due 2027
Debt Instrument [Line Items]
Interest rate	5.625%			5.625%
Debt principal amount	$ 400,000,000