Consolidated Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Cash flows from operating activities:
Net income (loss)	$ 171,460	$ (311,259)		$ (114,123)
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	552,951	540,771		529,739
Gains (losses) on retirement of long-term obligations	0	138,367	[1]	91,079	[2]
Amortization of deferred financing costs and other non-cash interest	102,943	85,454		61,357
Stock-based compensation expense	32,610	36,540		29,225
Asset write-down charges	22,285	13,687		19,237
Deferred income tax benefit (provision)	4,626	(26,196)		(74,410)
Income (expense) from forward-starting interest rate swaps	0	286,435		90,302
Other adjustments	4,122	857		821
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	201	(4,285)		52,705
Increase (decrease) in accounts payable	(7,497)	1,702		(1,703)
Increase (decrease) in deferred revenues, deferred ground lease payables, other accrued liabilities and other liabilities	19,606	39,012		9,317
Decrease (increase) in receivables	(17,407)	(11,653)		(4,830)
Decrease (increase) in prepaid expenses, deferred site rental receivables, long-term prepaid rent, restricted cash and other assets	(242,446)	(186,002)		(117,460)
Net cash provided by (used for) operating activities	643,454	603,430		571,256
Cash flows from investing activities:
Payment for acquisitions of businesses, net of cash acquired	(37,551)	(139,158)		(2,598)
Capital expenditures	(347,942)	(228,058)		(173,535)
Other investing activities, net	(14,372)	(23,733)		3,988
Net cash provided by (used for) investing activities	(399,865)	(390,949)		(172,145)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	0	3,450,000		2,726,348
Proceeds from issuance of capital stock	1,557	18,731		45,049
Principal payments on debt and other long-term obligations	(35,345)	(26,398)		(6,500)
Purchases and redemptions of long-term debt	0	(3,541,312)		(2,191,719)
Purchases of capital stock	(303,414)	(159,639)		(3,003)
Purchases of preferred stock	(15,002)	0		0
Borrowings under revolving credit facility	283,000	157,000		50,000
Payments under revolving credit facility	(189,000)	0		(219,400)
Payments for financing costs	0	(59,259)		(67,760)
Payments for forward-starting interest rate swap settlements	0	(697,821)		(36,670)
Net (increase) decrease in restricted cash	1,979	11,953		(62,071)
Dividends on preferred stock	(19,487)	(19,879)		(19,878)
Net cash provided by (used for) financing activities	(275,712)	(866,624)		214,396
Effect of exchange rate changes on cash	(288)	528		(2,580)
Net increase (decrease) in cash and cash equivalents	(32,411)	(653,615)		610,927
Cash and cash equivalents at beginning of year	112,531	766,146		155,219
Cash and cash equivalents at end of year	$ 80,120	$ 112,531		$ 766,146

[1] Inclusive of $23.4 million related to the write-off of deferred financing costs and discounts.

[2] Inclusive of $4.2 million related to the write-off of deferred financing costs and other non-cash adjustments.