Represents the debt instrument's issued amount as a percentage of the debt instrument's face amount.

No definition available.

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- Definition

Debt Instrument, Term Required of Notes to be Retired or Refinanced Prior to Maturity to Satisfy Redetermination

+ References

No definition available.

+ Details

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- Definition

The floor for the variable rate base of the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 8

-Article 9

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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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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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ 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 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- 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

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

+ 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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Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

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

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

+ Details

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

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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Long-Term Debt (Details) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended
Long-Term Debt (Details) - USD ($)	Apr. 30, 2015	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	May. 31, 2015	Dec. 31, 2014
Debt and Available Credit Facility
Long-term debt		$ 4,931,000,000			$ 4,931,000,000			$ 4,598,000,000
Deferred financing costs		84,000,000			84,000,000			90,000,000
Payments of Debt Issuance Costs			$ 19,000,000		19,000,000	$ 0
Amortization of deferred financing costs		4,000,000		$ 5,000,000	14,000,000	16,000,000
Loss on extinguishment of debt		0		$ 0	41,000,000	$ 17,000,000
Write off of Deferred Debt Issuance Cost					12,000,000
$2.75 billion RBL credit facility - due May 24, 2019
Debt and Available Credit Facility
Face amount of debt instrument		2,750,000,000			2,750,000,000			2,750,000,000
Long-term debt		1,135,000,000			1,135,000,000			852,000,000
Borrowing capacity		2,750,000,000.00			2,750,000,000.00
Letters of credit outstanding		82,000,000			82,000,000
Remaining capacity		1,530,000,000			1,530,000,000
$2.75 billion RBL credit facility - due May 24, 2019 \| Subsequent event
Debt and Available Credit Facility
Borrowing capacity	$ 2,750,000,000.00
Term loans and notes are retired or refinanced prior to maturity to complete semi-annual redetermination	6 months
Senior secured term loan - due May 24, 2018
Debt and Available Credit Facility
Long-term debt		$ 496,000,000			$ 496,000,000			$ 496,000,000
Debt instrument issuance as a percentage of the par value		99.00%			99.00%
Effective interest rate (as a percent)		3.50%			3.50%			3.50%
Senior secured term loan - due May 24, 2018 \| London Interbank Offered Rate LIBOR
Debt and Available Credit Facility
Reference rate for variable interest rate					LIBOR
Specified margin on reference rate (as a percent)					2.75%
Senior secured term loan - due May 24, 2018 \| London Interbank Offered Rate LIBOR \| Minimum
Debt and Available Credit Facility
Reference rate for variable interest rate					LIBOR
Reference rate floor for variable interest rate (as a percent)		0.75%			0.75%
Senior secured term loan - due April 30, 2019
Debt and Available Credit Facility
Long-term debt		$ 150,000,000			$ 150,000,000			$ 150,000,000
Effective interest rate (as a percent)		4.50%			4.50%			4.50%
Senior secured term loan - due April 30, 2019 \| London Interbank Offered Rate LIBOR
Debt and Available Credit Facility
Reference rate for variable interest rate					LIBOR
Specified margin on reference rate (as a percent)					3.50%
Senior secured term loan - due April 30, 2019 \| London Interbank Offered Rate LIBOR \| Minimum
Debt and Available Credit Facility
Reference rate for variable interest rate					LIBOR
Reference rate floor for variable interest rate (as a percent)		1.00%			1.00%
Senior secured notes - due May 1, 2019
Debt and Available Credit Facility
Interest rate (as a percent)		6.875%			6.875%
Long-term debt		$ 0			$ 0		$ 750,000,000
Senior unsecured notes - due May 1, 2020
Debt and Available Credit Facility
Interest rate (as a percent)		9.375%			9.375%
Long-term debt		$ 2,000,000,000			$ 2,000,000,000			$ 2,000,000,000
Senior unsecured notes - due September 1, 2022
Debt and Available Credit Facility
Interest rate (as a percent)		7.75%			7.75%
Long-term debt		$ 350,000,000			$ 350,000,000			$ 350,000,000
Senior unsecured notes - due June 15, 2023
Debt and Available Credit Facility
Interest rate (as a percent)		6.375%			6.375%
Long-term debt		$ 800,000,000			$ 800,000,000