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Commitments and Contingencies and Derivative Financial Instruments (Details) $ in Thousands, $ in Millions			3 Months Ended			9 Months Ended
	Apr. 12, 2022 USD ($)	Apr. 12, 2022 AUD ($)	Jul. 01, 2022 USD ($)	Apr. 01, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jul. 01, 2022 USD ($)	Oct. 01, 2021 USD ($)	Dec. 31, 2012 MW	Dec. 22, 2008 case
Loss Contingencies [Line Items]
Aggregate principal balance of short-term debt			$ 51,630			$ 51,630	$ 53,456
Interest Rate Swap and Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Fair value of derivative assets			74,900			74,900	(800)
Unrealized gain (loss) on derivatives					$ 7,400	52,800
Interest Rate Swap and Cross Currency Interest Rate Contract | Miscellaneous Other Assets
Loss Contingencies [Line Items]
Fair value of derivative assets			74,900			74,900	10,200
Interest Rate Swap and Cross Currency Interest Rate Contract | Other Deferred Liabilities
Loss Contingencies [Line Items]
Fair value of derivative assets							(11,000)
Interest Rate Swap
Loss Contingencies [Line Items]
Derivative notional amount			$ 766,700			$ 766,700
Interest Rate Swap | SONIA Rate
Loss Contingencies [Line Items]
Derivative fixed interest rate			0.82%			0.82%
Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Derivative notional amount			$ 127,800			$ 127,800
Cross Currency Interest Rate Contract | LIBOR
Loss Contingencies [Line Items]
Spread on variable rate			0.875%			0.875%
Foreign Exchange Forward
Loss Contingencies [Line Items]
Derivative notional amount			$ 186,100			$ 186,100	506,500
Fair value of derivative assets			(3,200)			$ (3,200)	55,500
Settled amount of hedge			$ 66,700
Minimum | Interest Rate Swap | LIBOR
Loss Contingencies [Line Items]
Derivative fixed interest rate			0.704%			0.704%
Minimum | Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Term of derivative contract						3 years 6 months
Derivative fixed interest rate			0.726%			0.726%
Minimum | Foreign Exchange Forward
Loss Contingencies [Line Items]
Term of derivative contract						1 month
Maximum | Interest Rate Swap | LIBOR
Loss Contingencies [Line Items]
Derivative fixed interest rate			1.116%			1.116%
Maximum | Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Term of derivative contract						10 years
Derivative fixed interest rate			0.746%			0.746%
Maximum | Foreign Exchange Forward
Loss Contingencies [Line Items]
Term of derivative contract						12 months
General Electric and GE Electrical International Inc | Settled Litigation
Loss Contingencies [Line Items]
Plant capacity (in MW's) | MW								360
JKC Australia LNG Pty Limited | Settled Litigation
Loss Contingencies [Line Items]
Settlement payment	$ 475,000	$ 640
Loss related to settlement				$ 91,300		$ 91,300
Kingston Power Plant of the TVA, Secondary Case No. 3:13CV-505-TAV-HBG
Loss Contingencies [Line Items]
Number of pending claims | case									10
LOCs
Loss Contingencies [Line Items]
Aggregate principal balance of short-term debt			$ 286,900			286,900	263,800
Surety Bond
Loss Contingencies [Line Items]
Aggregate principal balance of short-term debt			$ 2,200,000			$ 2,200,000	$ 2,100,000

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