|
Supplemental Cash Flow Information (Details) (USD $)
|
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2010
|
|
| Cash paid for interest | $ 113,313,000 | $ 134,690,000 |
| Cash paid for income taxes | 3,873,000 | 2,237,000 |
| Non-cash investing and financing activities | ||
| Accrued purchases of property and equipment | 96,900,000 | 81,800,000 |
| Assets acquired under capital lease obligations | 20,300,000 | 10,400,000 |
| Equipment returned for credit applicable for additional equipment | $ 17,800,000 | |
| X | ||||||||||
|
- Definition
Future cash outflow to pay for purchases of fixed assets that have occurred. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase during the period in capital lease obligations due to entering into new capital leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Value of property contributed in noncash investing and financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of cash paid for interest during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|