Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)

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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Allowances on accounts receivable, current $ 6,032 $ 6,174
Accumulated depreciation on property and equipment 707,892 651,559
Accumulated amortization on other intangible assets $ 239,489 $ 225,367
Common stock, par value $ 0.00001 $ 0.00001
Common stock, shares authorized 600,000,000 600,000,000
Common stock, shares issued 226,928,063 226,194,656
Common stock, shares outstanding 198,674,187 210,819,790
Treasury stock, common shares 28,253,876 15,374,866
Exchangeable Shares [Member]    
Exchangeable Shares, par value $ 0 $ 0
Common stock, shares issued 7,325,971 7,325,971
Common stock, shares outstanding 7,325,971 7,325,971
Series F Preferred Stock [Member]    
Preferred stock, par value $ 0.00001 $ 0.00001
Preferred stock, shares authorized 1 1
Preferred stock, shares issued 1 1
Preferred stock, shares outstanding 1 1
Series G Preferred Stock [Member]    
Preferred stock, par value $ 0.00001 $ 0.00001
Preferred stock, shares authorized 1 1
Preferred stock, shares issued 1 1
Preferred stock, shares outstanding 1 1