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, 2018	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
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)			98,500,000	81,600,000	81,500,000
Shares issued (in shares)			500,000	17,000,000		100,000
Shares acquired (in shares)			(100,000)	(100,000)		0
Ending balance (in shares)			98,900,000	98,500,000	81,600,000	81,500,000
Series D Convertible Junior Preference Stock			70,182
Optional redemption price			$ 25
Debt Instrument, Unamortized Discount			$ 58
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			103,100,000	86,800,000	86,800,000
Shares issued (in shares)			0	16,300,000	0
Shares acquired (in shares)			0	0	0
Ending balance (in shares)			103,100,000	103,100,000	86,800,000	86,800,000
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			4,600,000	5,200,000	5,300,000
Shares issued (in shares)			(500,000)	(700,000)	(100,000)
Shares acquired (in shares)			(100,000)	(100,000)	0
Ending balance (in shares)			4,200,000	4,600,000	5,200,000	5,300,000
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			$ 46
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