XML 237 R58.htm IDEA: XBRL DOCUMENT v2.4.0.8
Business, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) (USD $)
 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
Segment
Dec. 31, 2012
Dec. 31, 2011
Mar. 31, 2014
Accounting Standards Update 2011-06 [Member]
Subsequent Event [Member]
Dec. 31, 2013
Building [Member]
Dec. 31, 2013
Computer Software, Intangible Asset [Member]
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2013
Minimum [Member]
Other Capitalized Property Plant and Equipment [Member]
Dec. 31, 2013
Minimum [Member]
Leasehold Improvements [Member]
Dec. 31, 2013
Minimum [Member]
VODA and VOCRA [Member]
Dec. 31, 2013
Maximum [Member]
Dec. 31, 2013
Maximum [Member]
Other Capitalized Property Plant and Equipment [Member]
Dec. 31, 2013
Maximum [Member]
Leasehold Improvements [Member]
Dec. 31, 2013
Maximum [Member]
VODA and VOCRA [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]                            
Number of segments 6                          
Property, Plant and Equipment [Abstract]                            
Cost basis of property, equipment and leasehold improvements $ 2,000,000,000 $ 2,500,000,000                        
Accumulated depreciation and amortization of property, equipment and leasehold improvements 1,000,000,000 1,300,000,000                        
Depreciation and amortization expense 183,000,000 208,000,000 199,000,000                      
Cost basis of computer software 1,700,000,000 1,500,000,000                        
Accumulated amortization of computer software 1,100,000,000 932,000,000                        
Amortization expense related to computer software 216,000,000 221,000,000 217,000,000                      
Real Estate Held-for-investment And Accumulated Depreciation [Line Items]                            
Real Estate Held-for-investment And Accumulated Depreciation Life Used For Depreciation             20 years       55 years      
Finite-Lived Intangible Assets [Line Items]                            
Amortization period           4 years       10 years       40 years
Property, Plant and Equipment [Line Items]                            
Property, Plant and Equipment, Useful Life         40 years     3 years 1 year     7 years 25 years  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                            
Adoption of the new accounting pronouncement       $ 57,000,000