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Revenues - Contract Balances (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2018 USD ($)
Change In Contract With Customer, Liability [Roll Forward] |
Beginning balance | $ 90
Amounts recognized as revenue | (79)
Additions | 445
Other | (3)
Ending balance | 453
Crude Oil Sales Agreements Entered Into In Conjunction WIth Storage Arrangements And Future Inventory Exchanges |
Change In Contract With Customer, Liability [Roll Forward] |
Additions | 197
Ending balance | 197
Long-term capacity agreement | Cactus II Pipeline LLC |
Change In Contract With Customer, Liability [Roll Forward] |
Additions | $ 100

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- Details
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