XML 204 R132.htm IDEA: XBRL DOCUMENT v3.6.0.2
Line of Business Information - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
line_of_business
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Segment Reporting Information [Line Items]      
Number of lines of business | line_of_business 2    
Net expenses $ 8,077 $ 8,050 $ 7,827
Acquisition and restructuring costs $ 209 25 133
Boston Financial Data Services, Inc.      
Segment Reporting Information [Line Items]      
Ownership percentage 50.00%    
Other      
Segment Reporting Information [Line Items]      
Net expenses $ 199 98 219
Acquisition and restructuring costs 209 25 133
Severance costs $ (10) $ 73 84
Provision for litigation and other costs     $ 2
Investment Servicing and Management Services | Investment Servicing and Investment Management | Minimum      
Segment Reporting Information [Line Items]      
Percent of consolidated revenues   75.00%  
Investment Servicing and Management Services | Investment Servicing and Investment Management | Maximum      
Segment Reporting Information [Line Items]      
Percent of consolidated revenues   80.00%  
Processing and Other Services | Investment Servicing and Investment Management | Minimum      
Segment Reporting Information [Line Items]      
Percent of consolidated revenues   20.00%  
Processing and Other Services | Investment Servicing and Investment Management | Maximum      
Segment Reporting Information [Line Items]      
Percent of consolidated revenues   25.00%