Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2013

Supplemental Cash Flow Elements [Abstract]

Supplemental cash flow information

Supplemental cash flow information was as follows:

	Three months ended March 31,
	2013		2012
	(In thousands)
Interest paid	$	45,425	37,325
Income taxes paid	$	3,721	4,183
Changes in accounts payable related to purchases of revenue earning equipment	$	29,381	316,457
Operating and revenue earning equipment acquired under capital leases	$	458	59