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Revenue Remaining Performance Obligations (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
Contract with customer, liability | $ 96 |
Remaining performance obligation, expected timing of satisfaction, years | 19 years |
L&S |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
2018 | $ 704 |
2019 | 929 |
2020 | 929 |
2021 | 929 |
2022 and thereafter | 5,577 |
Total revenue on remaining performance obligations | 9,068 | [1],[2]
G&P |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
2018 | 91 | [3]
2019 | 118 | [3]
2020 | 114 | [3]
2021 | 113 | [3]
2022 and thereafter | 404 | [3]
Total revenue on remaining performance obligations | $ 840 | [1],[2],[3]
[1] | All fixed consideration from contracts with customers is included in the amounts presented above. Variable consideration that is constrained or not required to be estimated as it reflects our efforts to perform is excluded.
[2] | Arrangements deemed implicit leases are included in “Rental income” and are excluded from this table.
[3] | Only minimum volume commitments that are deemed fixed are included in the table above. The Partnership has various minimum volume commitments in processing arrangements that vary based on the actual Btu content of the gas received. These amounts are deemed variable consideration and are excluded from the table above.

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130532-203044 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044 + Details
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