Defined Benefit Plan, Amount Seeking Approval to Move to Separate Account to Pay Union Employee Medical Costs

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- Definition

Defined Benefit Plan Estimated Future Employer Contributions in Year Two

+ References

No definition available.

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- Definition

Defined Benefit Plans Estimated Future Employer Contributions in Year Three

+ References

No definition available.

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- Definition

Defined Benefit Plans Estimated Maximum Future Employer Contributions, Next Three Fiscal Years

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No definition available.

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- Definition

Defined Benefit Plans Estimated Minimum Future Employer Contributions, Next Three Fiscal Years

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No definition available.

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- Definition

Represents the amortization period for recovery of the individual regulatory asset in a schedule of regulatory assets.

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No definition available.

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The expense charged against earnings during the period to allocate the capitalized costs of regulatory assets over the periods expected to benefit from such costs.

+ References

Reference 1: 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=31042434&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 210.5-03.3)

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

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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Retirement Plans and Other Benefits - Narrative (Details) (USD $)	1 Months Ended	3 Months Ended
	Jul. 31, 2012	Mar. 31, 2015	Mar. 31, 2014
Regulatory Assets
Regulatory asset amortization period	3 years
Amortization of regulatory asset		$ 2,000,000us-gaap_AmortizationOfRegulatoryAsset	$ 2,000,000us-gaap_AmortizationOfRegulatoryAsset
Pension Benefits
Contributions
Voluntary employer contributions to pension plan		60,000,000
Minimum employer contributions for the next three years		0
Maximum employer contributions for the next three years		300,000,000
Other Benefits
Other Postretirement Benefit Plan Remeasurement
Other postretirement plan benefit remeasurement, amount seeking approval to move to separate account to Pay Union employee medical costs		100,000,000
Contributions
2015		1,000,000
2016		100,000,000
2017		100,000,000
Maximum \| Pension Benefits
Contributions
2015		100,000,000
2016		100,000,000
2017		$ 100,000,000