|
Segment Information (Schedule Of Revenue By Geographic Area) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2010
|
Sep. 30, 2010
|
Jun. 30, 2010
|
Mar. 31, 2010
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
| Segment Reporting, Revenue Reconciling Item [Line Items] | |||||||||||
| Revenue | $ 787,133 | $ 1,020,450 | $ 913,591 | $ 727,835 | $ 737,591 | $ 898,099 | $ 751,537 | $ 646,418 | $ 3,449,009 | $ 3,033,645 | $ 2,743,051 |
|
United States [Member]
|
|||||||||||
| Segment Reporting, Revenue Reconciling Item [Line Items] | |||||||||||
| Revenue | 1,995,783 | 1,872,810 | 1,712,084 | ||||||||
|
All Other Countries [Member]
|
|||||||||||
| Segment Reporting, Revenue Reconciling Item [Line Items] | |||||||||||
| Revenue | $ 1,453,226 | $ 1,160,835 | $ 1,030,967 | ||||||||