Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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- Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Details

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Debt and Credit Agreements (Details 3) (Revolving credit facility, USD $)	0 Months Ended
	Apr. 17, 2015	Mar. 31, 2015	Apr. 16, 2015
Debt Instrument [Line Items]
Availability under the credit facility		$ 1,100,000,000
Subsequent event
Debt Instrument [Line Items]
Borrowing base	3,400,000,000.0		3,100,000,000.0
Availability under the credit facility	1,800,000,000		1,400,000,000
Subsequent event \| Accordion Feature, Amended Facility
Debt Instrument [Line Items]
Borrowing base	500,000,000
Minimum \| Subsequent event
Debt Instrument [Line Items]
Commitment fee on the unused available balance	0.30%
Maximum \| Subsequent event
Debt Instrument [Line Items]
Commitment fee on the unused available balance	0.50%
Eurodollar LIBOR \| Subsequent event
Debt Instrument [Line Items]
Description of variable rate basis	Eurodollar (LIBOR)
Alternate base rate (ABR) \| Subsequent event
Debt Instrument [Line Items]
Description of variable rate basis	alternate base rate (ABR)
Debt Instrument Leverage Ratio Less than 1.0x \| Eurodollar LIBOR \| Subsequent event
Interest Rates Under Amended Credit Facility
Basis spread on variable rate	1.50%
Debt Instrument Leverage Ratio Less than 1.0x \| Alternate base rate (ABR) \| Subsequent event
Interest Rates Under Amended Credit Facility
Basis spread on variable rate	0.50%
Debt Instrument Leverage Ratio Greater than or Equal to 1.0x but Less than 2.0x \| Eurodollar LIBOR \| Subsequent event
Interest Rates Under Amended Credit Facility
Basis spread on variable rate	1.75%
Debt Instrument Leverage Ratio Greater than or Equal to 1.0x but Less than 2.0x \| Alternate base rate (ABR) \| Subsequent event
Interest Rates Under Amended Credit Facility
Basis spread on variable rate	0.75%
Debt Instrument Leverage Ratio Greater than or Equal to 2.0x but Less 3.0x \| Eurodollar LIBOR \| Subsequent event
Interest Rates Under Amended Credit Facility
Basis spread on variable rate	2.00%
Debt Instrument Leverage Ratio Greater than or Equal to 2.0x but Less 3.0x \| Alternate base rate (ABR) \| Subsequent event
Interest Rates Under Amended Credit Facility
Basis spread on variable rate	1.00%
Debt Instrument Leverage Ratio Greater than or Equal to 3.0x \| Eurodollar LIBOR \| Subsequent event
Interest Rates Under Amended Credit Facility
Basis spread on variable rate	2.25%
Debt Instrument Leverage Ratio Greater than or Equal to 3.0x \| Alternate base rate (ABR) \| Subsequent event
Interest Rates Under Amended Credit Facility
Basis spread on variable rate	1.25%