Stockholders' Deficit - Rollforward of Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	12 Months Ended
	Sep. 05, 2016	Apr. 30, 2014	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Class of Stock [Line Items]
Preferred Stock, Shares Authorized			30,000,000
Preference Stock			$ 10
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			98,900,000	98,500,000	81,600,000
Shares issued (in shares)			500,000	500,000		17,000,000.0
Shares acquired (in shares)			(200,000)	(100,000)		(100,000)
Ending balance (in shares)			99,200,000	98,900,000	98,500,000	81,600,000
Series D Convertible Junior Preference Stock			70,182
Optional redemption price			$ 25
Debt Instrument, Unamortized Discount			$ 41
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			103,100,000	103,100,000	86,800,000
Shares issued (in shares)			0	0	16,300,000
Shares acquired (in shares)			0	0	0
Ending balance (in shares)			103,100,000	103,100,000	103,100,000	86,800,000
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			4,200,000	4,600,000	5,200,000
Shares issued (in shares)			(500,000)	(500,000)	(700,000)
Shares acquired (in shares)			(200,000)	(100,000)	(100,000)
Ending balance (in shares)			3,900,000	4,200,000	4,600,000	5,200,000
Volkswagen Truck and Bus GmbH [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, New Issues	16,200,000
Stock Issued During Period, Value, New Issues	$ 256
Share Price	$ 15.76
Stock Purchase Agreement, Ownership Percentage Transferred to Acquirer	19.90%
Stock Purchase Agreement, Ownership Percentage Transferred to Acquirer, Pro Forma	16.60%
Manufacturing Operations [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Debt Instrument, Unamortized Discount			$ 36
Four Point Five Zero Senior Subordinated Convertible Notes [Member] | Manufacturing Operations [Member] | Convertible Subordinated Debt [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Long-term Debt, Fair Value		$ 177
Debt Instrument, Unamortized Discount			0	$ 5
Four Point Seven Five Senior Subordinated Convertible Notes [Member] [Member] | Convertible Subordinated Debt [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Debt Instrument, Unamortized Discount			1
Four Point Seven Five Senior Subordinated Convertible Notes [Member] [Member] | Manufacturing Operations [Member] | Convertible Subordinated Debt [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Long-term Debt, Fair Value		367
Debt Instrument, Convertible, Carrying Amount of Equity Component		22	44
Debt Instrument, Unamortized Discount			$ 5	$ 14
Debt Related Commitment Fees and Debt Issuance Costs		9
Additional Paid-in Capital [Member] | Four Point Seven Five Senior Subordinated Convertible Notes [Member] [Member] | Manufacturing Operations [Member] | Convertible Subordinated Debt [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Debt Related Commitment Fees and Debt Issuance Costs		$ 1