Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Attributable To Redeemable Noncontrolling Interests [Abstract]
Redeemable noncontrolling interests	$ 283,325	$ 219,724	$ 465,585
Estimate of Fair Value Measurement [Member]
Debt Instrument, Fair Value Disclosure [Abstract]
Fair value of debt	1,089,300	1,940,100
Fair value, measurements, recurring [Member]
Assets [Abstract]
Derivative contracts - assets	5,620	12,533
Total assets	5,620	12,533
Liabilities [Abstract]
Derivative contracts - liabilities	3,629	1,708
Total liabilities	3,629	1,708
Attributable To Redeemable Noncontrolling Interests [Abstract]
Redeemable noncontrolling interests	283,325	219,724
Fair value, measurements, recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Derivative contracts - assets	0	0
Total assets	0	0
Liabilities [Abstract]
Derivative contracts - liabilities	0	0
Total liabilities	0	0
Attributable To Redeemable Noncontrolling Interests [Abstract]
Redeemable noncontrolling interests	0	0
Fair value, measurements, recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Derivative contracts - assets	5,620	12,533
Total assets	5,620	12,533
Liabilities [Abstract]
Derivative contracts - liabilities	3,629	1,708
Total liabilities	3,629	1,708
Attributable To Redeemable Noncontrolling Interests [Abstract]
Redeemable noncontrolling interests	0	0
Fair value, measurements, recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Derivative contracts - assets	0	0
Total assets	0	0
Liabilities [Abstract]
Derivative contracts - liabilities	0	0
Total liabilities	0	0
Attributable To Redeemable Noncontrolling Interests [Abstract]
Redeemable noncontrolling interests	$ 283,325	$ 219,724

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value of financial and nonfinancial obligations.

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