Equity Method Investment, Deferred Performance Incentives

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- Definition

Equity Method Investment, Deferred Performance Incentives, Amount Recognized

+ References

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- Definition

Equity Method Investment, Deferred Performance Incentives, Term

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options and Restricted Stock Grants In Period Fair Value

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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Equity (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	12 Months Ended
	Feb. 15, 2017	Mar. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in period (in shares)	563,408
Share price (in dollars per share)	$ 29.68
Fair value	$ 26.9
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted in period (in shares)	667,488
Vesting period of shares	3 years
Corporate Joint Venture \| San Mateo Midstream
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance incentives earned		$ 14.7
Deferred performance incentives		$ 58.8	$ 73.5
Deferred performance incentives term		4 years	5 years