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Servicing Activities (Components Of Mortgage Servicing Fees) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Servicing Activities [Abstract]        
Contractual servicing fees, net of guarantee fees and including subservicing $ 0 $ 3 $ 0 $ 61
Late fees 0 0 0 1
Ancillary fees 0 0 0 4
Total mortgage servicing fees $ 0 $ 3 $ 0 $ 66