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Long-Term Debt, Summary of Long-Term Debt (Details) € in Millions, $ in Millions	12 Months Ended
	Sep. 28, 2019 USD ($)	Sep. 28, 2019 EUR (€)	Jul. 31, 2019	Sep. 29, 2018 USD ($)	Jan. 31, 2018
Long-term Debt [Abstract]
Long-term debt	$ 11,477
Debt discounts and deferred fees	(112)			$ (43)
Capital leases and other	167			135
Total long-term debt	11,365			5,844
Current portion of long-term debt	(104)			(38)
Long-term debt	11,261			5,806
Term Loan due October 2022 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 1,545			1,545
Maturity date	Oct. 31, 2022
Term Loan due January 2024 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 489			493
Maturity date	Jan. 31, 2024
Term Loan due July 2026 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 4,250			0
Maturity date	Jul. 31, 2026
Term Loan - Euro Denominated due July 2026 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 1,176	€ 1,075		0
Maturity date	Jul. 31, 2026
Revolving Line of Credit [Member]
Long-term Debt [Abstract]
Long-term debt	$ 0			0
Maturity date	May 31, 2024
5.50% Second Priority Senior Secured Notes due May 2022 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 500			500
Interest rate	5.50%	5.50%
Maturity date	May 31, 2022
6.00% Second Priority Senior Secured Notes due October 2022 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 400			400
Interest rate	6.00%	6.00%
Maturity date	Oct. 31, 2022
5.125% Second Priority Senior Secured Notes due July 2023 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 700			700
Interest rate	5.125%	5.125%
Maturity date	Jul. 31, 2023
4.50% Second Priority Senior Secured Notes due February 2026 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 500			500
Interest rate	4.50%	4.50%			4.50%
Maturity date	Feb. 28, 2026
4.875% First Priority Senior Secured Notes due July 2026 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 1,250			0
Interest rate	4.875%	4.875%	4.875%
Maturity date	Jul. 31, 2026
5.625% Second Priority Senior Secured Notes due July 2027 [Member]
Long-term Debt [Abstract]
Long-term debt	$ 500			0
Interest rate	5.625%	5.625%	5.625%
Maturity date	Jul. 31, 2027
Retired Debt [Member]
Long-term Debt [Abstract]
Long-term debt	$ 0			$ 1,614