Acquisitions - Proforma Consolidated Income Statement (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Business Combinations [Abstract]
REVENUES	$ 1,803,768
COSTS AND EXPENSES:
Direct operating expenses	1,115,770
Depreciation and amortization expense	176,298	[1]
General and administrative expenses	227,652	[2]
Operating income (loss)	284,048
Loss on early extinguishment of debt	46,451
Interest expense, net of amounts capitalized	42,389
Other income, net	(7,585)
Income (loss) from continuing operations before tax	202,793
Income tax expense	(76,169)	[3]
Income (loss) from continuing operations	126,624
Income (loss) from discontinued operations, net of tax	(10,303)
Net income	116,321
Loss attributable to noncontrolling interest	(806)
INCOME ATTRIBUTABLE TO KEY	$ 117,127
Earnings per share attributable to Key:
Basic (usd per share)	$ 0.79
Diluted (usd per share)	$ 0.79
Weighted average shares outstanding:
Basic (shares)	150,397	[4]
Diluted (shares)	150,705	[4]

[1] Depreciation and amortization expense has been adjusted to reflect the additional expense that would have been charged assuming the fair value adjustments to property and equipment and intangible assets had been applied prior to 2011.

[2] Transaction costs of $3.6 million have been removed as these costs would have occurred prior to 2011.

[3] Income tax expense has been adjusted to reflect applicable corporate tax as if Edge had been acquired and converted from its LLC status prior to 2011.

[4] Weighted average shares outstanding has been adjusted to reflect the issuance of shares in the Edge transaction as if the transaction occurred prior to 2011.