Business Acquisition, Equity Interest Acquired, Number of Shares

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- Definition

Business Combination, Share Conversion Rate

+ References

No definition available.

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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- Definition

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

+ 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

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

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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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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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No definition available.

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Subsequent Events (Details)		3 Months Ended
Subsequent Events (Details)	Apr. 26, 2018 USD ($) shares	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Subsequent Events
Repayments of long-term debt		$ 146,636,000	$ 817,000,000
Partnership Credit Facility \| Revolving Credit Facility
Subsequent Events
Revolving credit facility borrowing capacity		1,100,000,000.0
Outstanding letter of credit		$ 0
Subsequent Event \| Partnership Credit Facility \| Revolving Credit Facility
Subsequent Events
Revolving credit facility borrowing capacity	$ 1,250,000,000.00
Undrawn capacity under revolving credit facility	500,000,000
Repayments of long-term debt	63,200,000
Outstanding letter of credit	15,400,000
Subsequent Event \| Partnership Credit Facility \| Letter of Credit
Subsequent Events
Revolving credit facility borrowing capacity	$ 50,000,000
Subsequent Event \| Partnership Merger \| Common Stock
Subsequent Events
Business acquisition, shares acquired (shares) \| shares	41.2
Share conversion rate (per share)	1.40
Value of shares used as consideration	$ 625,300,000