v3.7.0.1

Debt (Notes) | 6 Months Ended
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Jun. 30, 2017
Debt Disclosure [Abstract] |
Debt | DEBT DEBT BALANCE, NET OF UNAMORTIZED ISSUANCE COSTS (in millions)
| June 30, 2017 |  | December 31, 2016
Total debt | $ | 3,829 |  |  | $ | 4,109 |
Unamortized issuance costs | (50 | ) |  | (55 | )
Current maturities | (1 | ) |  | (1 | )
Debt, Net of Current Maturities and Unamortized Issuance Costs | $ | 3,778 |  |  | $ | 4,053 |
AVAILABLE CAPACITY UNDER CREDIT FACILITIES (in millions)
| Total Capacity |  | Amount Borrowed as of June 30, 2017 |  | Outstanding Letters of Credit |  | Available Capacity |  | Expiration
Andeavor Logistics Revolving Credit Facility (a) | $ | 600 |  |  | $ | 50 |  |  | $ | — |  |  | $ | 550 |  |  | January 29, 2021
Andeavor Logistics Dropdown Credit Facility | 1,000 |  |  | — |  |  | — |  |  | 1,000 |  |  | January 29, 2021
Total Credit Facilities (b) | $ | 1,600 |  |  | $ | 50 |  |  | $ | — |  |  | $ | 1,550 |  |  |
(a) | The weighted average interest rate for borrowings under our Revolving Credit Facility was 3.31% at June 30, 2017.
(b) | We are allowed to request that the loan availability be increased up to an aggregate of $2.1 billion, subject to receiving increased commitments from the lenders.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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