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Contractual Guarantees, Litigation, Investigations, and Insurance (Details) $ in Millions	1 Months Ended
	Aug. 31, 2017 USD ($)	Oct. 01, 2021 case	Sep. 28, 2012 MW
General Electric And G E Electrical International Incorporation
Loss Contingencies [Line Items]
Plant capacity (in MW) | MW			360
General Electric And G E Electrical International Incorporation | Pending Litigation | Minimum
Loss Contingencies [Line Items]
Damages sought	$ 530.0
Kingston Power Plant of the TVA, Secondary Case No. 3:13CV-505-TAV-HBG
Loss Contingencies [Line Items]
Number of cases | case		10
JKC Australia L N G Pty Limited | Pending Litigation
Loss Contingencies [Line Items]
Damages sought	$ 1,700.0

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