Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

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

Average fixed price related to the group of price risk swap derivatives.

+ References

No definition available.

+ Details

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: 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(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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Subsequent Events (Details)	Jul. 31, 2016 MBbls $ / bbl	Jun. 30, 2016 MBbls	Feb. 23, 2016 USD ($)	Feb. 22, 2016 USD ($)
2017 Three Way Collars [Member]
Subsequent Event [Line Items]
Total notional amount of oil (in MBbls)		1,336
2018 Three Way Collars [Member]
Subsequent Event [Line Items]
Total notional amount of oil (in MBbls)		124
Subsequent Event [Member]
Subsequent Event [Line Items]
Average swap price (in dollars per barrel) \| $ / bbl	45.00
Subsequent Event [Member] \| 2017 Three Way Collars [Member]
Subsequent Event [Line Items]
Total notional amount of oil (in MBbls)	334
Subsequent Event [Member] \| 2018 Three Way Collars [Member]
Subsequent Event [Line Items]
Total notional amount of oil (in MBbls)	31
Revolving Credit Facility [Member] \| Line of Credit [Member]
Subsequent Event [Line Items]
Line of credit facility, current borrowing capacity \| $			$ 1,150,000,000.0	$ 1,525,000,000.0