XML 77 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
Litigation and Contingencies Environmental Remediation (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 30, 2017
Environmental Remediation Obligations [Abstract]    
Environmental remediation costs $ 0.9 $ 31.1
Environmental remediation accrual 29.2  
Environmental remediation accrual, current 12.7  
Environmental remediation accrual, noncurrent $ 16.5