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Commitments and Contingencies - Guarantees (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2018 USD ($)
Other Guarantees |
Loss Contingencies [Line Items] |
Maximum potential undiscounted payments | $ 93
Guarantee obligations maximum exposure per event | $ 50
LOOP and LOCAP LLC | Guarantee of Indebtedness of Others | Financial Guarantee |
Loss Contingencies [Line Items] |
Line of credit facility, expiration date | Dec. 31, 2037
Maximum potential undiscounted payments | $ 160
Centennial | Guarantee of Indebtedness of Others | Financial Guarantee |
Loss Contingencies [Line Items] |
Maximum potential undiscounted payments | $ 24
Centennial | Master Shelf Agreement [Member] | Financial Guarantee |
Loss Contingencies [Line Items] |
Line of credit facility, expiration date | Dec. 31, 2024
Crowley Ocean Partners |
Loss Contingencies [Line Items] |
Equity method investments, ownership percentage | 50.00%
Crowley Ocean Partners | Guarantee of Indebtedness of Others | Financial Guarantee |
Loss Contingencies [Line Items] |
Maximum potential undiscounted payments | $ 163
Crowley Ocean Partners | Guarantee of Indebtedness of Others | Financial Guarantee | Crowley Term Loan |
Loss Contingencies [Line Items] |
Maximum borrowing capacity | $ 325
Crowley Blue Water Partners |
Loss Contingencies [Line Items] |
Equity method investments, ownership percentage | 50.00%
Crowley Blue Water Partners | Guarantee of Indebtedness of Others | Financial Guarantee |
Loss Contingencies [Line Items] |
Maximum potential undiscounted payments | $ 132
Marathon Oil Companies | Indemnification Agreement |
Loss Contingencies [Line Items] |
Guarantee obligation current carrying value | $ 2

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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