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Subsequent Events (Details) - Subsequent Event - USD ($)
$ in Millions
Feb. 28, 2018
Jan. 25, 2018
Medium-term Notes    
Subsequent Event [Line Items]    
Company issued secured notes $ 350.0  
Stated interest rate 3.35%  
2018 Restructuring Plan [Member]    
Subsequent Event [Line Items]    
Restructuring and Related Cost, Expected Cost, Percentage Paid in Cash   70.00%
2018 Restructuring Plan [Member] | Minimum    
Subsequent Event [Line Items]    
Restructuring and Related Cost, Expected Cost   $ 170.0
2018 Restructuring Plan [Member] | Maximum    
Subsequent Event [Line Items]    
Restructuring and Related Cost, Expected Cost   $ 200.0