Finance Receivables Finance Receivables (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Consumer Loan [Member] North America [Member]	Sep. 30, 2012 Consumer Loan [Member] North America [Member]	Sep. 30, 2013 Commercial Loan [Member] Rate	Sep. 30, 2013 Pre-Acquisition Portfolio [Member] Consumer Loan [Member]	Sep. 30, 2013 Pre-Acquisition Portfolio [Member] Consumer Loan [Member]	Sep. 30, 2013 Pre-Acquisition Portfolio [Member] Consumer Loan [Member] North America [Member]	Sep. 30, 2012 Pre-Acquisition Portfolio [Member] Consumer Loan [Member] North America [Member]	Sep. 30, 2013 Pre-Acquisition Portfolio [Member] Consumer Loan [Member] North America [Member]	Sep. 30, 2012 Pre-Acquisition Portfolio [Member] Consumer Loan [Member] North America [Member]	Sep. 30, 2013 Pre-Acquisition Portfolio [Member] Consumer Loan [Member] International [Member]	Sep. 30, 2013 Pre-Acquisition Portfolio [Member] Consumer Loan [Member] International [Member]	Sep. 30, 2013 Restatement Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Consumer, Contractually Required Payments Receivable at Acquisition															$ 1,200,000,000
Cash Flows Not Expected To Be Collected, Acquisition															1,100,000,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Consumer, at Acquisition, at Fair Value															1,000,000,000
Percentage of Current Finance Receivable						99.70%
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference				73,000,000	170,000,000		19,000,000	73,000,000			54,000,000	170,000,000	19,000,000	19,000,000
Financing Receivable, Recorded Investment, Nonaccrual Status	550,000,000	550,000,000	503,000,000
Troubled Debt Restructurings - Subsequent Default	$ 9,000,000	$ 15,000,000