Debt Instrument Covenant Unrestricted Cash, Cash Equivalents And Investments

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- Definition

Debt Instrument Issue Price Percentage

+ References

No definition available.

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- Definition

Debt Instrument Leverage Ratio

+ References

No definition available.

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- Definition

Debt Instrument Prepayment Fee Percentage

+ References

No definition available.

+ Details

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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

Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 2: 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

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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

+ Details

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- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Balance Type:	debit
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount, before accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ 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 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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Period Type:	instant

- 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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Balance Type:	credit
Period Type:	instant

- Definition

Average amount borrowed under the credit facility during the period.

+ References

No definition available.

+ Details

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

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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- Definition

Period remaining on line of credit facility before it terminates, 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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- 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 borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.

+ References

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Debt - Additional Information (Detail) - USD ($)		1 Months Ended	9 Months Ended
Debt - Additional Information (Detail) - USD ($)	Nov. 08, 2017	May 31, 2016	Sep. 30, 2017
Amended Credit Agreement
Debt Instrument [Line Items]
Expiration period under the new Facility		5 years
Maximum borrowing capacity under the new Facility		$ 1,200,000,000
Maturity date of the new Facility		May 13, 2021
Available credit under the Facility			$ 1,000,000,000
Amount outstanding under letters of credit			53,000,000
Average borrowings under the Facility			$ 0
Amended Credit Agreement \| Subsequent Event \| Minimum
Debt Instrument [Line Items]
Aggregate liquidity maintenance covenant amount available under the facility	$ 400,000,000
Senior secured leverage ratio	150.00%
Amended Credit Agreement \| Other Assets
Debt Instrument [Line Items]
Debt acquisition costs		$ 6,000,000
Term Loan Facility \| Subsequent Event
Debt Instrument [Line Items]
Senior secured term loan	$ 750,000,000
Maturity date of term loan Facility	Nov. 08, 2022
Percentage of issue price of term loan credit Facility	97.00%
Debt issuance costs	$ 12,000,000
Quarterly amortization of loan principal amount under the Facility	$ 18,800,000
Beginning date of quarterly amortization of loan under the Facility	Mar. 15, 2018
Term Loan Facility \| Subsequent Event \| On or Prior to The First Anniversary
Debt Instrument [Line Items]
Prepayment fee percentage under the term loan Facility	2.00%
Term Loan Facility \| Subsequent Event \| After First Anniversary But On or Prior to The Second Anniversary
Debt Instrument [Line Items]
Prepayment fee percentage under the term loan Facility	1.00%
Term Loan Facility \| Subsequent Event \| LIBOR
Debt Instrument [Line Items]
Basis spread on alternative base rate under the term loan credit Facility	7.00%
Term Loan Facility \| Subsequent Event \| Base Rate
Debt Instrument [Line Items]
Basis spread on alternative base rate under the term loan credit Facility	6.00%