Finance Receivables - Delinquency (Details) - Consumer Finance Receivables [Member] - USD ($) $ in Millions	Jun. 30, 2015	Jun. 30, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	$ 1,062	$ 886
Greater than 60 days	452	388
Greater than 30 days past due	1,514	1,274
In repossession	46	40
Past Due	$ 1,560	$ 1,314
31 - 60 days, Percent of contractual amount due	3.60%	3.50%
Greater than 60 days, Percent of contractual amount due	1.60%	1.60%
Greater than 30 days past due, Percent of contractual amount due	5.20%	5.10%
In repossession, Percent of contractual amount due	0.20%	0.10%
Percent of contractual amount due	5.40%	5.20%
North America Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	$ 917	$ 756
Greater than 60 days	318	255
Greater than 30 days past due	1,235	1,011
In repossession	39	35
Past Due	1,274	1,046
International Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
31-60 days	145	130
Greater than 60 days	134	133
Greater than 30 days past due	279	263
In repossession	7	5
Past Due	$ 286	$ 268