Out of period adjustment of depreciation expense

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- Definition

Equity Method Investment, Additional Ownership Percentage Acquired

+ References

No definition available.

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- Definition

The defined percentage the empoyer will contribute to employee 401(k) plans through a profit sharing plan based upon the employee's base compensation.

+ References

No definition available.

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- Definition

Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

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- Definition

The noncash expense charged against earnings to recognize the consumption of natural resources.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

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-Topic 350

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- Definition

Amount of interest capitalized, including amount of allowance for funds used during construction.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

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-Topic 980

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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- Definition

Amount, after effect of policies assumed or ceded, of expense related to provision for policy benefits and costs incurred for health insurance contracts.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

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-Subparagraph (SX 210.7-04.5)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Article 7

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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Summary of Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014
Capitalized Interest Costs	$ 14	$ 2	$ 1
Ownership in affiliate	20.00%
Depreciation expense	418us-gaap_Depreciation	258us-gaap_Depreciation	219us-gaap_Depreciation
Depreciation out of period adjustment		7rgp_DepreciationOutOfPeriodAdjustment
Contributions by employer	9	7	4
Deferred tax liabilities related to property, plant, and equipment	20	22
Profit Sharing Plan Employer Percentage Contribution	3.00%
Policyholder Benefits and Claims Incurred, Net, Health	17	9	9
Goodwill, Impairment Loss	370us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Aqua - PVR [Member]
Ownership in affiliate				51.00%
Coal Handling [Member]
Ownership in affiliate				50.00%
Equity Method Investment, Additional Ownership Percentage Acquired				50.00%
Payments to Acquire Equity Method Investments	16
Minimum [Member]
Intangible assets useful life, minimum	8 years 0 months 0 days
Minimum [Member] \| Gathering and Transmission Systems
Property, Plant and Equipment, Useful Life	20 years 0 months 0 days
Minimum [Member] \| Compression Equipment
Property, Plant and Equipment, Useful Life	2 years 0 months 0 days
Minimum [Member] \| Gas Plants And Buildings [Member]
Property, Plant and Equipment, Useful Life	5 years 0 months 0 days
Minimum [Member] \| Other property, plant and equipment
Property, Plant and Equipment, Useful Life	3 years 0 months 0 days
Maximum [Member]
Intangible assets useful life, minimum	30 years 0 months 0 days
Maximum [Member] \| Gathering and Transmission Systems
Property, Plant and Equipment, Useful Life	40 years 0 months 0 days
Maximum [Member] \| Compression Equipment
Property, Plant and Equipment, Useful Life	30 years 0 months 0 days
Maximum [Member] \| Gas Plants And Buildings [Member]
Property, Plant and Equipment, Useful Life	20 years 0 months 0 days
Maximum [Member] \| Other property, plant and equipment
Property, Plant and Equipment, Useful Life	15 years 0 months 0 days
Natural Resources [Member]
Depletion	$ 11