Revenues By Geographic Area (Detail) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Total consolidated revenues	$ 5,094,378,000	$ 4,607,618,000
United States
Total consolidated revenues	2,633,394,000	2,371,032,000
Europe, Middle East and Africa
Total consolidated revenues	1,464,292,000	1,386,783,000
Asia Pacific And Japan
Total consolidated revenues	711,693,000	595,064,000
Latin America, Mexico And Canada
Total consolidated revenues	$ 284,999,000	$ 254,739,000