Derivatives Settled, Amount

No definition available.

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994

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- Definition

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

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-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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-Paragraph 1B
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- Definition

The amount of net gains or losses on interest rate cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2016 USD ($) instrument	Nov. 30, 2017 USD ($)
Derivative Instruments And Hedging Activities
AOCI reclassified into earnings	$ 51,000,000
4.125% Notes
Derivative Instruments And Hedging Activities
Debt instrument, stated percentage rate	4.125%
Unsecured Debt \| 4.125% Notes
Derivative Instruments And Hedging Activities
Notes issued			$ 400,000,000
Debt instrument, stated percentage rate			4.125%
Interest Rate Swap Entered Into In Anticipation of Debt Due January 2018
Derivative Instruments And Hedging Activities
Number of derivative contracts \| instrument		7
Notional amount		$ 350,000,000.0
Derivatives settled		$ 20,000,000
Interest Rate Swap Entered Into In Anticipation of Debt Due November 2018
Derivative Instruments And Hedging Activities
Number of derivative contracts \| instrument		11
Notional amount		$ 500,000,000.0
Future contracts \| Cash Flow Hedge
Derivative Instruments And Hedging Activities
Futures contracts for refined products	$ (2,000,000)
Interest rate contracts
Derivative Instruments And Hedging Activities
Hedges to be reclassified within the next twelve months	9,200,000
Settled forward-starting interest rate swaps
Derivative Instruments And Hedging Activities
Hedges to be reclassified within the next twelve months	11,200,000
Forward-starting interest rate swaps
Derivative Instruments And Hedging Activities
Hedges to be reclassified within the next twelve months	$ (2,000,000)