Retirement Plans and Other Retiree Benefits - Schedule of Target Asset Allocation (Details)	Dec. 31, 2017
United States
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target asset allocation	100.00%
United States | Equity securities
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target asset allocation	27.00%
United States | Fixed income securities
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target asset allocation	53.00%
United States | Real estate and other investments
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target asset allocation	20.00%
International
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target asset allocation	100.00%
International | Equity securities
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target asset allocation	39.00%
International | Fixed income securities
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target asset allocation	41.00%
International | Real estate and other investments
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Target asset allocation	20.00%