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Goodwill and Purchased Intangible Assets (Details) (USD $)
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Goodwill [Roll Forward]    
Gross Goodwill, beginning of period  $ 5,207,800,000 
Goodwill, Impaired, Accumulated Impairment Loss, Beginning of Period  (1,280,000,000) 
Goodwill, beginning of period  3,927,807,000 
Goodwill, Translation and Purchase Accounting Adjustments  300,000 
Goodwill acquired  400,000 
Gross Goodwill, end of period5,208,500,000 5,208,500,000 
Goodwill, Impaired, Accumulated Impairment Loss, End of Period(1,280,000,000) (1,280,000,000) 
Goodwill, end of period3,928,525,000 3,928,525,000 
Goodwill, Impairment Loss0000
Infrastructure Segment [Member]
    
Goodwill [Roll Forward]    
Gross Goodwill, beginning of period  1,643,400,000 
Goodwill, Impaired, Accumulated Impairment Loss, Beginning of Period  0 
Goodwill, beginning of period  1,643,400,000 
Goodwill, Translation and Purchase Accounting Adjustments  2,100,000 
Goodwill acquired  400,000 
Gross Goodwill, end of period1,645,900,000 1,645,900,000 
Goodwill, Impaired, Accumulated Impairment Loss, End of Period0 0 
Goodwill, end of period1,645,900,000 1,645,900,000 
Service Layer Technologies Segment [Member]
    
Goodwill [Roll Forward]    
Gross Goodwill, beginning of period  3,564,400,000 
Goodwill, Impaired, Accumulated Impairment Loss, Beginning of Period  (1,280,000,000) 
Goodwill, beginning of period  2,284,400,000 
Goodwill, Translation and Purchase Accounting Adjustments  (1,800,000) 
Goodwill acquired  0 
Gross Goodwill, end of period3,562,600,000 3,562,600,000 
Goodwill, Impaired, Accumulated Impairment Loss, End of Period(1,280,000,000) (1,280,000,000) 
Goodwill, end of period$ 2,282,600,000 $ 2,282,600,000