XML 19 R55.htm IDEA: XBRL DOCUMENT v2.4.0.8
Investment Securities (Details 3) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Mar. 31, 2013
Available For Sale Securities Debt Maturities Amortized Cost [Abstract]    
Due within 1 year $ 333 $ 333
Due after 1 year but within 5 years 451 459
Due after 5 years but within 10 years 208 220
Due after 10 years 3,559 3,633
Total $ 4,551 $ 4,645