Redeemable Noncontrolling Interest (Details) - Auto Alliance International [Member] $ in Millions	1 Months Ended
	Jan. 31, 2015 USD ($)
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	50.00%
Payments for Repurchase of Redeemable Noncontrolling Interest	$ 342
Mazda [Member]
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	50.00%