Consolidated Balance Sheets Parentheticals - shares shares in Millions |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2019 |
Dec. 31, 2018 |
|
| General Partner Ownership Interest Percentage | 2.00% | 2.00% |
| General Partners' Capital Account, Units Issued | 9.9 | 9.9 |
| General Partners' Capital Account, Units Outstanding | 9.9 | 9.9 |
| Common Units [Member] | ||
| Limited Partners' Capital Account, Units Issued | 348.6 | 348.6 |
| Limited Partners' Capital Account, Units Outstanding | 348.6 | 348.6 |
| Subordinated Units [Member] | ||
| Limited Partners' Capital Account, Units Issued | 135.4 | 135.4 |
| Limited Partners' Capital Account, Units Outstanding | 135.4 | 135.4 |
| X | ||||||||||
- Definition The number of general partner units issued. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of general partner units outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of limited partner units issued. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of limited partner units outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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- Details
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