XML 104 R90.htm IDEA: XBRL DOCUMENT v3.10.0.1
Commitments And Contingencies (Other Contingencies) (Details)
$ in Millions
3 Months Ended
Sep. 30, 2014
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2012
a
Jul. 31, 2006
Environmental Claims For Site In Goodyear Arizona [Member]        
Loss Contingencies [Line Items]        
Accrual for Environmental Loss Contingencies, Revision in Estimates $ 49.0      
Accrual for Environmental Loss Contingencies   $ 33.1    
Recorded Third-Party Environmental Recoveries Receivable   6.7    
Accrued Environmental Loss Contingencies, Current   $ 10.9    
Loss Contingency Reimbursement Rate       21.00%
Environmental Claims For Crab Orchard National Wildlife Refuge Superfund Site [Member]        
Loss Contingencies [Line Items]        
Approximate Size Of Referenced Site | a     55,000