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Leases (Policies) | 6 Months Ended
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Jun. 30, 2020
Leases [Abstract] |
Early Termination [Policy Text Block] | The option to extend or terminate a lease is based on customary early termination provisions in the contract, such as payment defaults, bankruptcy, and lack of performance on energy delivery.
Separation of Lease and Nonlease Components [Policy Text Block] | Capacity payments are generally considered lease elements as they cover the majority of available output from a facility. The allocation of contract payments between the lease and non-lease elements is made at the inception of the lease.

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- Definition Early Termination [Policy Text Block] + References No definition available. + Details
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Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Disclosure of accounting policy election of practical expedient not to separate lease component from nonlease component. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918707-209980 + Details
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