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Asset Retirement Obligation | 6 Months Ended
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Jun. 30, 2015
Asset Retirement Obligation Disclosure [Abstract] |
Asset Retirement Obligation | Asset Retirement Obligation The following table sets forth the change in the asset retirement obligations associated with our advertising structures located on leased properties. The obligation is calculated based on the assumption that all of our advertising structures will be removed within the next 50 years. The estimated annual costs to dismantle and remove the structures upon the termination or non-renewal of our leases are consistent with our historical experience.
(in millions) |  |
As of December 31, 2014 |  | $ | 36.6 |
Accretion expense |  | 1.2 |
Additions |  | 0.1 |
Liabilities settled |  | (0.6 | )
Foreign currency translation adjustments |  | (0.7 | )
As of June 30, 2015 |  | $ | 36.6 |

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- Definition The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7569-110849 + Details
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