Annual report pursuant to Section 13 and 15(d)

Loans, Notes and Mortgages - Allowance for Loan Losses (Details)

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Loans, Notes and Mortgages - Allowance for Loan Losses (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Allowance for Loan and Lease Losses [Roll Forward]    
Allowance for loan losses, at beginning of period $ 72 $ 170
Provision for loan losses (51) 66
Charge-offs (14) (180)
Recoveries 50 14
Net charge-offs 36 (166)
Other 0 2
Allowance for loan losses, at end of period $ 57 $ 72