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PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Schedule Of Changes In Carrying Amount Of Goodwill (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Goodwill |  |
Beginning balance | $ 4,066,575 | $ 4,128,887
Impairment |  | (7,274)
Acquisitions | 2,252 |
Foreign currency | 3,043 | (7,049)
Ending balance | 4,070,142 | 4,066,575
iHM |  |
Goodwill |  |
Beginning balance | 3,288,481 | 3,288,481
Impairment |  | 0
Acquisitions | 0 |
Foreign currency | 0 | 0
Ending balance | 3,288,481 | 3,288,481
Americas Outdoor Advertising |  |
Goodwill |  |
Beginning balance | 515,414 | 534,683
Impairment |  | 0
Acquisitions | 2,252 |
Foreign currency | 583 | (1,998)
Ending balance | 518,338 | 515,414
International Outdoor Advertising |  |
Goodwill |  |
Beginning balance | 180,849 | 223,892
Impairment |  | (7,274)
Acquisitions | 0 |
Foreign currency | 2,460 | (5,051)
Ending balance | 181,492 | 180,849
Other |  |
Goodwill |  |
Beginning balance | 81,831 | 81,831
Impairment |  | 0
Acquisitions | 0 |
Foreign currency | 0 | 0
Ending balance | 81,831 | 81,831
Dispositions |  |
Goodwill |  |
Dispositions and assets held for sale | (1,817) | (37,652)
Dispositions | iHM |  |
Goodwill |  |
Dispositions and assets held for sale | 0 | 0
Dispositions | Americas Outdoor Advertising |  |
Goodwill |  |
Dispositions and assets held for sale | 0 | (6,934)
Dispositions | International Outdoor Advertising |  |
Goodwill |  |
Dispositions and assets held for sale | (1,817) | (30,718)
Dispositions | Other |  |
Goodwill |  |
Dispositions and assets held for sale | 0 | 0
Assets held for sale |  |
Goodwill |  |
Dispositions and assets held for sale | 89 | (10,337)
Assets held for sale | iHM |  |
Goodwill |  |
Dispositions and assets held for sale | 0 | 0
Assets held for sale | Americas Outdoor Advertising |  |
Goodwill |  |
Dispositions and assets held for sale | 89 | (10,337)
Assets held for sale | International Outdoor Advertising |  |
Goodwill |  |
Dispositions and assets held for sale | 0 | 0
Assets held for sale | Other |  |
Goodwill |  |
Dispositions and assets held for sale | $ 0 | $ 0

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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 -Subparagraph (a) -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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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