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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Accounts receivable, allowance $ 5.8 $ 5.6
Short-term restricted cash 4.7 4.8
Accumulated depreciation and amortization, property 1,097.3 1,039.4
Long-term restricted cash $ 0.4 $ 0.5
Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 4,584,000 4,584,000
Preferred stock, shares outstanding (in shares) 4,584,000 4,584,000
Class A Common Stock [Member]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 1,000,000,000 1,000,000,000
Common stock, shares issued (in shares) 358,677,000 358,599,000
Common stock, shares outstanding (in shares) 358,677,000 358,599,000
Class B Common Stock [Member]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 3,000 3,000
Common stock, shares issued (in shares) 3,000 3,000
Common stock, shares outstanding (in shares) 3,000 3,000