Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Contractual Maturities) (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Vehicle Program Debt Amount Outstanding	$ 10,848
Vehicle backed debt [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Within 1 year	1,251	[1]
Between 1 and 2 years	4,871
Between 2 and 3 years	1,485
Between 3 and 4 years	1,156
Between 4 and 5 years	1,714
Thereafter	371
Vehicle Program Debt Amount Outstanding	$ 10,848

[1] Vehicle-backed debt maturing within one year primarily represents term asset-backed securities.