Debt (Borrowing Capacity) (Details) $ in Millions	Sep. 30, 2016 USD ($)
Debt Instrument [Line Items]
Remaining Capacity	$ 2,526
Availability Under Borrowing Base Limitation	1,117
Senior ABL Facility
Debt Instrument [Line Items]
Remaining Capacity	1,100
Availability Under Borrowing Base Limitation	1,100
Corporate Debt
Debt Instrument [Line Items]
Remaining Capacity	1,100
Availability Under Borrowing Base Limitation	1,100
US Vehicle RCF
Debt Instrument [Line Items]
Remaining Capacity	0
Availability Under Borrowing Base Limitation	4
HVF II U.S. ABS Program
Debt Instrument [Line Items]
Remaining Capacity	1,036
Availability Under Borrowing Base Limitation	4
HFLF Medium Term Notes
Debt Instrument [Line Items]
Remaining Capacity	200
Availability Under Borrowing Base Limitation	0
European Revolving Credit Facility
Debt Instrument [Line Items]
Remaining Capacity	0
Availability Under Borrowing Base Limitation	0
European Securitization
Debt Instrument [Line Items]
Remaining Capacity	42
Availability Under Borrowing Base Limitation	3
Canadian Securitization
Debt Instrument [Line Items]
Remaining Capacity	0
Availability Under Borrowing Base Limitation	0
Australian Securitization
Debt Instrument [Line Items]
Remaining Capacity	72
Availability Under Borrowing Base Limitation	0
Capitalized Leases
Debt Instrument [Line Items]
Remaining Capacity	64
Availability Under Borrowing Base Limitation	0
New Zealand Revolving Credit Facility
Debt Instrument [Line Items]
Remaining Capacity	12
Availability Under Borrowing Base Limitation	6
Fleet Debt
Debt Instrument [Line Items]
Remaining Capacity	1,426
Availability Under Borrowing Base Limitation	$ 17