Consolidated Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities
Net income	$ 10,710	$ 69,012
Add (deduct) adjustments to reconcile net income to net cash flows from operating activities
Depreciation, amortization and accretion	189,845	146,685
Bad debts expense	16,910	13,850
Stock-based compensation expense	5,036	5,391
Deferred income taxes, net	7,048	6,283
Equity in earnings of unconsolidated entities	(26,835)	(21,614)
Distributions from unconsolidated entities	5,836	2,822
Loss on asset disposals, net	5,434	2,003
(Gain) loss on sale of business and other exit costs, net	6,931	(4,213)
Noncash interest expense	262	451
Other operating activities	250	449
Changes in assets and liabilities from operations
Accounts receivable	33,611	36,621
Inventory	16,750	(4,410)
Accounts payable - trade	4,644	(17,689)
Accounts payable - affiliate	(1,933)	2,989
Customer deposits and deferred revenues	8,862	9,512
Accrued taxes	6,175	79,765
Accrued interest	9,201	9,167
Other assets and liabilities	(75,122)	(80,107)
Cash flows from operating activities	223,615	256,967
Cash flows from investing activities
Cash used for additions to property, plant and equipment	(151,024)	(209,160)
Cash paid for acquisitions and licenses	(14,150)	(11,096)
Cash paid for investments		(10,000)
Cash received from divestitures		49,786
Cash received for investments		10,000
Other investing activities	3,654	296
Cash flows from investing activities	(161,520)	(170,174)
Cash flows from financing activities
Repayment of long-term debt	(61)	(12)
Common shares reissued for benefit plans, net of tax payments	123	357
Common shares repurchased	(18,425)
Distributions to noncontrolling interests	(2,396)	(218)
Other financing activities	2	3
Cash flows from financing activities	(20,757)	130
Net increase in cash and cash equivalents	41,338	86,923
Cash and cash equivalents
Beginning of period	378,358	424,155
End of period	$ 419,696	$ 511,078