Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Business Combinations - Additional Information (Details)

v3.19.1
Business Combinations - Additional Information (Details)
€ in Millions, $ in Millions
1 Months Ended 12 Months Ended
Apr. 03, 2018
USD ($)
country
Apr. 03, 2018
EUR (€)
country
Apr. 30, 2018
USD ($)
Apr. 30, 2018
EUR (€)
Mar. 31, 2019
USD ($)
Mar. 31, 2019
EUR (€)
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Business Acquisition [Line Items]                
Cash consideration         $ 558.7   $ 0.0 $ 0.0
Fermacell                
Business Acquisition [Line Items]                
Consideration transferred     $ 635.6 € 516.4        
Voting interest acquired (as percent) 100.00% 100.00%            
Cash consideration $ 492.4 € 400.0            
Number of countries | country 13 13            
Transaction and integration related costs         21.8      
Net adjustments related to property, plant and equipment and deferred tax valuations | €           € 0.5    
Inventory fair value adjustment         $ 7.3