Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows Provided By Operating Activities	$ 261,380	$ 294,953
Cash Flows from Investing Activities
Additions to fixed assets and computer software	(17,069)	(19,187)
Proceeds from sale of assets	23	15,391
Net cash used in investing activities	(17,046)	(3,796)
Cash Flows from Financing Activities
Long-term debt repurchases and repayments	(400,853)	(207,187)
Debt issuance costs and other financing items, net	(5,312)	497
Decrease in checks not yet presented for payment	(502)	(16,895)
Net cash used in financing activities	(406,667)	(223,585)
(Decrease) increase in cash and cash equivalents	(162,333)	67,572
Cash and cash equivalents, beginning of period	257,939	127,852
Cash and cash equivalents, end of period	95,606	195,424
Supplemental Information:
Cash interest, net	121,371	163,509
Cash income taxes, net	4,734	8,963
Non-cash Financing Activities:
Reduction of debt from debt repurchases	$ 144,315	$ 0