Represents the term of extension option of the debt instrument.

No definition available.

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- Definition

Increased maximum borrowing capacity under the credit facility allowed under the accordion feature.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Represents the amount of increase allowed in maximum borrowing capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of line of credit maximum borrowing capacity as a percentage of maximum principal amount.

+ 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.

+ Details

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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.

+ Details

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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

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 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
-Article 5

+ Details

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

- 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

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

+ Details

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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

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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- Details

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- Details

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Debt - Narrative (Details) - USD ($)	12 Months Ended
Debt - Narrative (Details) - USD ($)	Dec. 31, 2015	Jul. 22, 2015	Sep. 18, 2014
LIBOR \| Adjusted LIBOR Rate Loans and Letter of Credit \| Consolidated Leverage Ratio, 35%
Debt
Reference rate (as a percent)	0.85%
LIBOR \| Adjusted LIBOR Rate Loans and Letter of Credit \| Consolidated Leverage Ratio, >35% and 45%
Debt
Reference rate (as a percent)	0.90%
LIBOR \| Adjusted LIBOR Rate Loans and Letter of Credit \| Consolidated Leverage Ratio, >45% and 45%
Debt
Reference rate (as a percent)	1.00%
LIBOR \| Adjusted LIBOR Rate Loans and Letter of Credit \| Consolidated Leverage Ratio, >45% and 50%
Debt
Reference rate (as a percent)	1.20%
LIBOR \| Adjusted LIBOR Rate Loans and Letter of Credit \| Consolidated Leverage Ratio, >50% and 55%
Debt
Reference rate (as a percent)	1.55%
Base Rate \| Base Rate Loans \| Consolidated Leverage Ratio, 35%
Debt
Reference rate (as a percent)	0.00%
Base Rate \| Base Rate Loans \| Consolidated Leverage Ratio, >35% and 45%
Debt
Reference rate (as a percent)	0.00%
Base Rate \| Base Rate Loans \| Consolidated Leverage Ratio, >45% and 45%
Debt
Reference rate (as a percent)	0.10%
Base Rate \| Base Rate Loans \| Consolidated Leverage Ratio, >45% and 50%
Debt
Reference rate (as a percent)	0.20%
Base Rate \| Base Rate Loans \| Consolidated Leverage Ratio, >50% and 55%
Debt
Reference rate (as a percent)	0.60%
Credit Agreement
Debt
Maximum borrowing capacity	$ 750,000,000	$ 400,000,000	$ 400,000,000
Maximum borrowing capacity as a percentage of maximum principal amount			10.00%
Increase in maximum borrowing capacity			$ 350,000,000
Maximum borrowing capacity under accordion feature			750,000,000
Term of extension option	1 year
Unused fee (as a percent)	0.25%
Amount outstanding	$ 395,000,000
Current borrowing capacity	$ 198,700,000.0
Credit Agreement \| Credit Agreement Amendment
Debt
Maximum borrowing capacity		$ 750,000,000
Maximum borrowing capacity as a percentage of maximum principal amount		10.00%
Increase in maximum borrowing capacity		$ 350,000,000
Maximum borrowing capacity under accordion feature		$ 1,100,000,000.0
Credit Agreement \| LIBOR
Debt
Reference rate (as a percent)	1.20%
Prior Credit Facility
Debt
Maximum borrowing capacity			$ 200,000,000