XML 33 R71.htm IDEA: XBRL DOCUMENT v2.4.1.9
Commitments and Guarantees - Contractual Amounts of Credit-Related Off-Balance Sheet Financial Instruments (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]    
Indemnified securities financing $ 348,960stt_AggregateFairValueOfIndemnifiedSecuritiesOnLoan $ 349,766stt_AggregateFairValueOfIndemnifiedSecuritiesOnLoan
Stable value protection 23,425stt_StableValueProtection 23,409stt_StableValueProtection
Asset purchase agreements 4,212stt_AssetPurchaseAgreements 4,107stt_AssetPurchaseAgreements
Standby letters of credit $ 4,782stt_StandByLettersOfCredit $ 4,720stt_StandByLettersOfCredit