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Commitments, Guarantees and Contingencies - Environmental Matters (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Jun. 30, 2014 MW
Boswell Unit 4 [Member] |
Environmental Matters [Line Items] |
Estimated Capital Expenditures, Including Past Expenditures | $ 300
Capital Cost Spent to Date | 102.3
Other Commitment, Due in Next Twelve Months | 104.7
Other Commitment, Due in Second Year | 72.5
NOV Consent Decree [Member] |
Environmental Matters [Line Items] |
Environmental Remediation Expense | 4.2
Civil Penalty | 1.4
Estimated Capital Expenditures, Including Past Expenditures | 600
Generating Capacity (MW) | 200
NOV Consent Decree [Member] | Minimum [Member] |
Environmental Matters [Line Items] |
Estimated Capital Expenditures | 20
NOV Consent Decree [Member] | Maximum [Member] |
Environmental Matters [Line Items] |
Estimated Capital Expenditures | $ 40

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- Details
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- Definition The estimated amount of certain future capital expenditures related to environmental compliance, regulatory matters, or other committments and/or contingencies. + References No definition available. + Details
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- Definition The estimated amount of certain capital expenditures related to environmental compliance, regulatory matters, or other commitments and/or contingencies. This estimate includes expenditures expected in future periods and expenditures made through the end of the current period. + References No definition available. + Details
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- Definition The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities. + 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=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859 + Details
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- Definition Minimum amount of other commitment maturing in the next fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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- Definition Minimum amount of other commitment maturing in the second fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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