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Other assets impairments, restructuring and other items - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2021
Restructuring and Impairment Costs [Line Items]          
Impairments of long-lived tangible assets [1] $ 32.0 $ 277.0 $ 80.0 $ 352.0  
Restructuring costs (13.0) 33.0 69.0 73.0  
Business combination contingent consideration arrangements change in amount of contingent consideration liability $ (19.0) $ 76.0 $ (16.0) $ 83.0  
Scenario, Forecast [Member]          
Restructuring and Impairment Costs [Line Items]          
Expected revenue from Florida manufacturing plant in 2020         $ 46.3
[1] Including impairments related to exit and disposal activities