Pension and Postretirement Expense Level 4 (Details) - Weighted Average Allocations of Plan Assets - Pension Plan [Member]	Dec. 31, 2018	Dec. 31, 2017
UNITED STATES
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	100.00%	100.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
UNITED STATES | Equity Securities [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	32.00%	34.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	35.00%
UNITED STATES | Debt Securities [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	55.00%	55.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	55.00%
UNITED STATES | Cash and Cash Equivalents [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	13.00%	11.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	10.00%
Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	100.00%	100.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
Foreign Plan [Member] | Equity Securities [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	19.00%	22.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	20.00%
Foreign Plan [Member] | Debt Securities [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	78.00%	76.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	80.00%
Foreign Plan [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	3.00%	2.00%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%