Property, Plant And Equipment, Intangible Assets And Goodwill (Schedule Of Property, Plant And Equipment) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment
Property, plant and equipment	$ 4,713,554	$ 4,599,719	$ 4,275,407
Less: accumulated depreciation	1,832,284	1,562,865	1,212,080
Property, plant and equipment, net	2,881,270	3,036,854	3,063,327
Land, buildings and improvements [Member]
Property, Plant and Equipment
Property, plant and equipment	696,753	685,431	657,346
Structures [Member]
Property, Plant and Equipment
Property, plant and equipment	3,008,298	2,949,458	2,783,434
Towers, transmitters and studio equipment [Member]
Property, Plant and Equipment
Property, plant and equipment	439,603	427,679	400,832
Furniture and other equipment [Member]
Property, Plant and Equipment
Property, plant and equipment	456,260	431,757	365,137
Construction in progress [Member]
Property, Plant and Equipment
Property, plant and equipment	$ 112,640	$ 105,394	$ 68,658

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References+ Details

Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References+ Details

- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References+ Details