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Unit-Based Compensation (Phantom Common Unit Awards) - Additional Information(Details) $ in Millions | 3 Months Ended
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Mar. 31, 2017 USD ($)
Phantom common units [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options | $ 35
Fair Value Of Nonvested Service Phantom Units | $ 68
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 4 years 23 days
Share Based Compensation Award Tranche One [Member] | Phantom common units [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Employee Service Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage | 60.00%
Share Based Compensation Award Tranche One [Member] | Maximum [Member] | Non-employee director [Member] | 2012 Long Term Incentive Plan [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Vesting Period | 3 years
Share Based Compensation Award Tranche Two [Member] | Phantom common units [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Employee Service Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage | 40.00%

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + References No definition available. + Details
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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=6415400&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + 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=6415400&loc=d3e5070-113901 + Details
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- Definition Intrinsic value of equity-based compensation awards not vested. Excludes stock and unit options. + References No definition available. + Details
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