Debt - Debt With A Contractual Term Greater Than One Year (Details) $ in Thousands	Sep. 27, 2020 USD ($)	Sep. 27, 2020 EUR (€)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Sep. 29, 2019 USD ($)
Debt Instrument
Long-term debt	$ 8,280,960		$ 6,872,935		$ 6,386,714
Current portion of long-term debt, net	(2,109,284)		(1,748,109)		(1,779,673)
Long-term debt, net	6,171,676		5,124,826		4,607,041
Secured Debt
Debt Instrument
Less: unamortized discount and debt issuance costs	(9,903)		(2,573)		(3,095)
Long-term debt	2,691,193		1,369,512		1,553,996
Secured Debt | Asset-backed Canadian commercial paper conduit facility
Debt Instrument
Long-term debt, gross	127,500		114,693		128,368
Secured Debt | Asset-backed U.S. commercial paper conduit facilities
Debt Instrument
Long-term debt, gross	467,338		490,427		552,757
Secured Debt | Asset-backed securitization debt
Debt Instrument
Long-term debt, gross	2,106,258		766,965		875,966
Medium-term notes
Debt Instrument
Long-term debt, gross	4,845,961		4,760,127		4,089,591
Less: unamortized discount and debt issuance costs	$ (17,289)		(12,809)		(10,409)
Medium-term notes | Due in 2020, issued February 2015
Debt Instrument
Debt instrument, stated percentage	2.15%	2.15%
Long-term debt, gross	$ 0		600,000		600,000
Medium-term notes | Due in 2020, issued May 2018
Debt Instrument
Long-term debt, gross	$ 0		450,000		450,000
Medium-term notes | Due in 2020, issued March 2017
Debt Instrument
Debt instrument, stated percentage	2.40%	2.40%
Long-term debt, gross	$ 0		350,000		350,000
Medium-term notes | Due in 2021, issued January 2016
Debt Instrument
Debt instrument, stated percentage	2.85%	2.85%
Long-term debt, gross	$ 600,000		600,000		600,000
Medium-term notes | Due in 2021, issued November 2018
Debt Instrument
Long-term debt, gross	$ 450,000		450,000		450,000
Medium-term notes | Due in 2021, issued May 2018
Debt Instrument
Debt instrument, stated percentage	3.55%	3.55%
Long-term debt, gross	$ 350,000		350,000		350,000
Medium-term notes | Due in 2022, issued February 2019
Debt Instrument
Debt instrument, stated percentage	4.05%	4.05%
Long-term debt, gross	$ 550,000		550,000		550,000
Medium-term notes | Due in 2022, issued June 2017
Debt Instrument
Debt instrument, stated percentage	2.55%	2.55%
Long-term debt, gross	$ 400,000		400,000		400,000
Medium-term notes | Due in 2023, issued February 2018
Debt Instrument
Debt instrument, stated percentage	3.35%	3.35%
Long-term debt, gross	$ 350,000		350,000		350,000
Medium-term notes | Due in 2023, issued May 2020
Debt Instrument
Debt instrument, stated percentage	4.94%	4.94%
Long-term debt, gross	$ 760,890	€ 650,000,000.0	0		0
Medium-term notes | Due in 2024, issued November 2019
Debt Instrument
Debt instrument, stated percentage	3.14%	3.14%
Long-term debt, gross	$ 702,360	€ 600,000,000.0	672,936	€ 600,000,000.0	0
Medium-term notes | Due in 2025, issued June 2020
Debt Instrument
Debt instrument, stated percentage	3.35%	3.35%
Long-term debt, gross	$ 700,000		0		0
Senior notes
Debt Instrument
Less: unamortized discount and debt issuance costs	(6,194)		(6,704)		(6,873)
Long-term debt	$ 743,806		743,296		743,127
Senior notes | Due in 2025, issued July 2015
Debt Instrument
Debt instrument, stated percentage	3.50%	3.50%
Long-term debt, gross	$ 450,000		450,000		450,000
Senior notes | Due in 2045, issued July 2015
Debt Instrument
Debt instrument, stated percentage	4.625%	4.625%
Long-term debt, gross	$ 300,000		300,000		300,000
Unsecured Debt
Debt Instrument
Long-term debt	$ 5,589,767		$ 5,503,423		$ 4,832,718
Unsecured Debt | Due in 2020, issued May 2018
Debt Instrument
Debt instrument, stated percentage	0.50%	0.50%
Unsecured Debt | Due in 2021, issued November 2018
Debt Instrument
Debt instrument, stated percentage	0.94%	0.94%