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Property, Plant And Equipment, Intangible Assets And Goodwill (Schedule Of Changes In Carrying Amount Of Goodwill) (Detail) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Goodwill [Line Items] |  |
Balance | $ 4,187,424 | $ 4,202,187
Impairment |  | 0
Acquisitions | 0 | 18,199
Dispositions | 0 | 0
Foreign currency | (9,652) | (33,022)
Other | 0 | 60
Balance | 4,177,772 | 4,187,424
iHM [Member] |  |
Goodwill [Line Items] |  |
Balance | 3,252,767 | 3,234,807
Impairment |  | 0
Acquisitions | 0 | 17,900
Dispositions | 0 | 0
Foreign currency | 0 | 0
Other | 0 | 60
Balance | 3,252,767 | 3,252,767
Americas Outdoor Advertising [Member] |  |
Goodwill [Line Items] |  |
Balance | 584,574 | 585,227
Impairment |  | 0
Acquisitions | 0 | 0
Dispositions | 0 | 0
Foreign currency | (312) | (653)
Other | 0 | 0
Balance | 584,262 | 584,574
International Outdoor Advertising [Member] |  |
Goodwill [Line Items] |  |
Balance | 232,538 | 264,907
Impairment |  | 0
Acquisitions | 0 | 0
Dispositions | 0 | 0
Foreign currency | (9,340) | (32,369)
Other | 0 | 0
Balance | 223,198 | 232,538
Other [Member] |  |
Goodwill [Line Items] |  |
Balance | 117,545 | 117,246
Impairment |  | 0
Acquisitions | 0 | 299
Dispositions | 0 | 0
Foreign currency | 0 | 0
Other | 0 | 0
Balance | $ 117,545 | $ 117,545

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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