XML 40 R50.htm IDEA: XBRL DOCUMENT v3.2.0.727
Securities - Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) - Held-to-maturity Securities [Member] - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]        
Beginning balance of credit losses on held-to-maturity debt securities for which a portion of an other-than-temporary impairment was recognized in other comprehensive income (loss)   $ 63   $ 61
Increase in credit losses for which an other-than-temporary impairment was previously recognized $ 0   $ 0  
Ending balance of credit losses on held-to-maturity debt securities for which a portion of an other-than-temporary impairment was recognized in other comprehensive income (loss)   68   68
Other Revenues [Member]        
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]        
Increase in credit losses for which an other-than-temporary impairment was previously recognized $ 0 $ 5 $ 0 $ 7