Subsequent Events (Details) (USD $)	3 Months Ended
	Sep. 30, 2012
Subsequent Event [Line Items]
Purchase price for sale of ABA Seguros	$ 865,000,000
Book Value of ABA Seguros	429,000,000
Purchase price for sale of Canadian auto finance operation	4,100,000,000
Book value of Canadian auto finance operation	3,500,000,000
Series F-2 Preferred Stock [Member]
Subsequent Event [Line Items]
Cash dividend per share	$ 1.125
Preferred stock dividend amount outstanding	134,000,000
Series G Preferred Stock [Member]
Subsequent Event [Line Items]
Cash dividend per share	$ 17.50
Preferred stock dividend amount outstanding	45,000,000
Series A Preferred Stock [Member]
Subsequent Event [Line Items]
Cash dividend per share	$ 0.53
Preferred stock dividend amount outstanding	22,000,000
Minimum [Member]
Subsequent Event [Line Items]
Expected settlement loss of defined benefit pension plan	90,000,000
Maximum [Member]
Subsequent Event [Line Items]
Expected settlement loss of defined benefit pension plan	$ 120,000,000