Consolidated Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities
Net income	$ 69,012	$ 40,430
Add (deduct) adjustments to reconcile net income to net cash flows from operating activities
Depreciation, amortization and accretion	146,685	143,340
Bad debts expense	13,850	13,507
Stock-based compensation expense	5,391	5,792
Deferred income taxes, net	6,283	44,413
Equity in earnings of unconsolidated entities	(21,614)	(20,891)
Distributions from unconsolidated entities	2,822	8,323
(Gain) loss on asset disposals, net	(2,210)	1,037
Noncash interest expense	451	463
Other operating activities	449	601
Changes in assets and liabilities from operations
Accounts receivable	36,621	4,950
Inventory	(4,410)	3,461
Accounts payable - trade	(17,689)	53,713
Accounts payable - affiliate	2,989	(2,041)
Customer deposits and deferred revenues	9,512	10,245
Accrued taxes	79,765	11,829
Accrued interest	9,167	9,205
Other assets and liabilities	(80,107)	(70,669)
Cash flows from operating activities	256,967	257,708
Cash flows from investing activities
Cash used for additions to property, plant and equipment	(209,160)	(121,041)
Cash paid for acquisitions and licenses	(11,096)
Cash received from divestitures	49,786
Cash paid for investments	(10,000)
Cash received for investments	10,000	35,000
Other investing activities	296	2,200
Cash flows from investing activities	(170,174)	(83,841)
Cash flows from financing activities
Common shares reissued for benefit plans, net of tax payments	357	1,305
Common shares repurchased		(17,357)
Distributions to noncontrolling interests	(218)	(186)
Other financing activities	(9)	17
Cash flows from financing activities	130	(16,221)
Net increase (decrease) in cash and cash equivalents	86,923	157,646
Cash and cash equivalents
Beginning of period	424,155	276,915
End of period	$ 511,078	$ 434,561