XML 58 R47.htm IDEA: XBRL DOCUMENT v3.19.1
Leases - Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Operating Leases    
Operating lease right-of-use assets $ 37.4 $ 0.0
Current portion of operating lease liabilities 11.4 0.0
Operating lease liabilities, net of current portion 26.0 0.0
Total operating lease liabilities 37.4  
Finance leases    
Net property, plant and equipment 199.7 $ 196.4
Total finance lease liabilities $ 2.6  
Weighted average remaining lease term    
Operating leases 3 years 8 months 12 days  
Finance leases 2 years 1 month 6 days  
Weighted average discount rate    
Operating leases 3.10%  
Finance leases 2.50%  
Financial Leases [Member]    
Finance leases    
Property, plant and equipment at cost $ 10.8  
Accumulated depreciation (7.8)  
Current portion of finance leases 1.5  
Finance leases, net of current portion 1.1  
Total finance lease liabilities $ 2.6