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Financial Instruments and Fair Value Measurements - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]            
Impairment charges   $ 321,000   $ 51,549,000 $ 1,721,000  
Reclassification adjustment related to derivatives from AOCI to interest expense       20,200,000    
Derivatives designated as fair value hedges     $ 0 0   $ 0
Derivative designated to hedges of net investments in foreign operations     0 $ 0   0
Fair Value, Measurements, Nonrecurring            
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]            
Impairment charges $ 51,549,000   $ 0     $ 1,721,000