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Equity-Based Awards, Phantom Unit Awards (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract] |  |  |
Cash payments made in connection with DERs |  | $ 7.0 | $ 5.8
Phantom Unit Awards [Member] |  |  |
Summary of awards activity, equity instruments other than options [Roll Forward] |  |  |
Beginning of period (in units) |  | 15,669,442 |
Granted (in units) | [1] | 7,700,645 |
Vested (in units) |  | (5,141,095) |
Forfeited (in units) |  | (119,963) |
End of period (in units) |  | 18,109,029 |
Phantom units outstanding, weighted-average grant date fair value [Roll Forward] |  |  |
Weighted-average grant date fair value per unit, at beginning of period (in dollars per unit) | [2] | $ 26.76 |
Granted weighted-average grant date fair value per unit (in dollars per unit) | [1],[2] | 21.30 |
Vested weighted-average grant date fair value per unit (in dollars per unit) | [2] | 27.19 |
Forfeited weighted-average grant date fair value per unit (in dollars per unit) | [2] | 25.08 |
Weighted-average grant date fair value per unit, at end of period (in dollars per unit) | [2] | $ 24.32 |
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract] |  |  |
Aggregate grant date fair value |  | $ 164.0 |
Estimated forfeiture rate |  | 2.00% |
Cash payments made in connection with DERs |  | $ 7.0 | 5.8
Total intrinsic value of phantom unit awards that vested during period |  | 112.7 | $ 109.2
Unrecognized Compensation Expense [Abstract] |  |  |
Unrecognized compensation cost |  | $ 269.8 |
Recognition period for total unrecognized compensation cost |  | 2 years 3 months 18 days |
Phantom Unit Awards [Member] | Minimum [Member] |  |  |
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract] |  |  |
Grant date market price of common units (in dollars per unit) |  | $ 20.79 |
Phantom Unit Awards [Member] | Maximum [Member] |  |  |
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract] |  |  |
Grant date market price of common units (in dollars per unit) |  | $ 21.44 |
Phantom Unit Awards [Member] | Enterprise [Member] |  |  |
Unrecognized Compensation Expense [Abstract] |  |  |
Unrecognized compensation cost |  | $ 229.2 |
[1] | The aggregate grant date fair value of phantom unit awards issued during 2021 was $164.0 million based on a grant date market price of the Partnership’s common units ranging from $20.79 to $21.44 per unit. An estimated annual forfeiture rate of 2.0% was applied to these awards.
[2] | Determined by dividing the aggregate grant date fair value of awards (before an allowance for forfeitures) by the number of awards issued.

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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