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Commitments and Contingencies (Details) (Manufactured Gas Plant Sites [Member], USD $)
In Millions, unless otherwise specified |
9 Months Ended |
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Sep. 30, 2013
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Manufactured Gas Plant Sites [Member]
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| Commitments and Contingencies [Line Items] | |
| Loss Contingency, Range of Possible Loss, Minimum | $ 16 |
| Loss Contingency, Range of Possible Loss, Maximum | 62 |
| Period for future costs of detailed site investigation and remediation costs | over the next ten years |
| Accrual for Environmental Loss Contingencies, Provision for New Losses | $ 38.2 |
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- Definition
The amount added to the accrual for newly incurred environmental loss contingencies. These additions include remediation expense and interest accretion. These additions do not relate to changes in the environmental accrual related to a business acquisition or divestiture, to currency movements, or revisions in previously existing estimates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The estimated maximum amount of possible loss from the contingency. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The estimated minimum amount of possible loss from the contingency. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Period For Future Costs Of Detailed Site Investigation And Remediation Costs. No definition available.
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