Acquisition and Restructuring Costs (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended																3 Months Ended		3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Intesa Sanpaolo S Security Services	Dec. 31, 2011 Intesa Sanpaolo S Security Services	Dec. 31, 2013 Business Operations And Information Technology Transformation Program	Dec. 31, 2012 Business Operations And Information Technology Transformation Program	Dec. 31, 2011 Business Operations And Information Technology Transformation Program	Dec. 31, 2010 Business Operations And Information Technology Transformation Program	Dec. 31, 2013 Business Operations And Information Technology Transformation Program Involuntary Terminations employee	Dec. 31, 2011 Business Operations And Information Technology Transformation Program Involuntary Terminations employee	Dec. 31, 2010 Business Operations And Information Technology Transformation Program Involuntary Terminations employee	Dec. 31, 2011 Expenses Control Measures	Dec. 31, 2011 Expenses Control Measures Involuntary Terminations employee	Dec. 31, 2013 Expenses Control Measures - Additional Targeted Staff Reductions	Dec. 31, 2012 Expenses Control Measures - Additional Targeted Staff Reductions	Dec. 31, 2012 Expenses Control Measures - Additional Targeted Staff Reductions Involuntary Terminations employee	Dec. 31, 2013 Expenses Control Measures - Additional Targeted Staff Reductions Involuntary Terminations employees	Dec. 31, 2012 Expenses Control Measures - Additional Targeted Staff Reductions Involuntary Terminations After Replacements employee
Business Acquisition [Line Items]
Acquisition related costs		$ 66	$ 71
Income tax expense (benefit) associated with an indemnification benefit from income tax claim related to acquisition		40	55	(40)	(55)
Restructuring charges incurred to date						381
Restructuring charges, net	$ 28	$ 199	$ 253			$ 25	$ 67	$ 133	$ 156				$ 120		$ 3	$ 133
Expected number of positions eliminated										376	1,340	1,400		442			960		630
Percent of actual number of positions eliminated											5.00%
Number of positions eliminated from inception to date										1,278								782