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Commitments and Contingencies and Derivative Financial Instruments (Details)	1 Months Ended	3 Months Ended
	Aug. 31, 2017 USD ($)	Jan. 01, 2021 USD ($) case	Dec. 27, 2019 USD ($)	Oct. 02, 2020 USD ($)	Sep. 27, 2013 MW
Loss Contingencies [Line Items]
Selling, general and administrative expenses		$ 418,120,000	$ 493,226,000
Interest Rate Swap and Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Fair value of derivative assets		(34,800,000)
Fair value of derivative liabilities		10,800,000
Interest Rate Swap
Loss Contingencies [Line Items]
Derivative notional amount		798,400,000
Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Derivative notional amount		$ 127,800,000
Cross Currency Interest Rate Contract | LIBOR
Loss Contingencies [Line Items]
Spread on variable rate		0.875%
Foreign Exchange Forward
Loss Contingencies [Line Items]
Derivative notional amount		$ 425,800,000
Fair value of derivative assets		$ 82,300,000
Minimum | Interest Rate Swap
Loss Contingencies [Line Items]
Derivative fixed interest rate		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%
Minimum | Foreign Exchange Forward
Loss Contingencies [Line Items]
Term of derivative contract		1 month
Maximum | Interest Rate Swap
Loss Contingencies [Line Items]
Derivative fixed interest rate		1.116%
Maximum | Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Term of derivative contract		10 years
Derivative fixed interest rate		0.746%
Maximum | Foreign Exchange Forward
Loss Contingencies [Line Items]
Term of derivative contract		12 months
NPMC
Loss Contingencies [Line Items]
Selling, general and administrative expenses		$ 50,000,000.0
General Electric and GE Electrical International Inc | Pending Litigation
Loss Contingencies [Line Items]
Public Utility, Plant Capacity | MW					360
General Electric and GE Electrical International Inc | Pending Litigation | Minimum
Loss Contingencies [Line Items]
Damages sought	$ 530,000,000.0
JKC Australia LNG Pty Limited | Pending Litigation
Loss Contingencies [Line Items]
Damages sought	$ 1,700,000,000
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]
Debt issued and outstanding		$ 252,100,000		$ 263,000,000.0
Surety Bond
Loss Contingencies [Line Items]
Debt issued and outstanding		$ 2,100,000,000		$ 2,300,000,000

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