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Debt - Schedule of Debt Instruments (Details) - USD ($) $ in Millions	Apr. 30, 2021	Apr. 26, 2021	Oct. 31, 2020
Debt Instrument [Line Items]
Long-term debt	$ 4,624		$ 4,690
Senior Notes \| 9.5% Senior Secured Notes, due 2025
Debt Instrument [Line Items]
Interest rate	9.50%
Senior Notes \| 6.625% Senior Notes, due 2026
Debt Instrument [Line Items]
Interest rate	6.625%
Tax Exempt Bond \| 4.75% Notes
Debt Instrument [Line Items]
Interest rate	4.75%
Manufacturing operations
Debt Instrument [Line Items]
Financed lease obligations	$ 36		45
Long-term debt including current maturities	3,480		3,496
Less: Current portion	39		45
Long-term debt	3,441		3,451
Manufacturing operations \| Line of Credit
Debt Instrument [Line Items]
Unamortized debt discount	4		5
Debt issuance costs	7		8
Long-term debt	1,537		1,543
Manufacturing operations \| Senior Notes \| 9.5% Senior Secured Notes, due 2025
Debt Instrument [Line Items]
Long-term debt	$ 590		$ 589
Interest rate	9.50%	9.50%	9.50%
Debt issuance cost net	$ 10		$ 11
Manufacturing operations \| Senior Notes \| 6.625% Senior Notes, due 2026
Debt Instrument [Line Items]
Long-term debt	$ 1,088		$ 1,087
Interest rate	6.625%		6.625%
Debt issuance cost net	$ 12		$ 13
Manufacturing operations \| Tax Exempt Bond \| 4.75% Notes
Debt Instrument [Line Items]
Long-term debt	$ 223		$ 223
Interest rate	4.75%		4.75%
Debt issuance cost net	$ 2		$ 2
Manufacturing operations \| Other
Debt Instrument [Line Items]
Long-term debt	6		9
Financial Services
Debt Instrument [Line Items]
Long-term debt including current maturities	1,987		1,834
Less: Current portion	804		595
Long-term debt	1,183		1,239
Financial Services \| Line of Credit
Debt Instrument [Line Items]
Long-term debt	836		940
Debt issuance cost net	1		1
Financial Services \| Secured Debt
Debt Instrument [Line Items]
Long-term debt	967		724
Debt issuance cost net	2		4
Financial Services \| Commercial Paper \| Variable Rate Program Due 2022
Debt Instrument [Line Items]
Long-term debt	15		0
Financial Services \| Borrowings Secured By Operating and Finance Leases
Debt Instrument [Line Items]
Long-term debt	$ 169		$ 170