(Pension Allocations By Type Of Fund And Target Allocations) (Details) - U.S. Plans	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation Percentage	100.00%	100.00%
Equity accounts
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation Percentage	40.00%	37.00%
Fixed income accounts
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation Percentage	48.00%	50.00%
Real estate accounts
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation Percentage	7.00%	8.00%
Other
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation Percentage	5.00%	5.00%
Minimum [Member] | Equity accounts
Defined Benefit Plan Disclosure [Line Items]
Target Allocations	32
Minimum [Member] | Fixed income accounts
Defined Benefit Plan Disclosure [Line Items]
Target Allocations	44
Minimum [Member] | Real estate accounts
Defined Benefit Plan Disclosure [Line Items]
Target Allocations	5
Minimum [Member] | Other
Defined Benefit Plan Disclosure [Line Items]
Target Allocations	3
Maximum [Member] | Equity accounts
Defined Benefit Plan Disclosure [Line Items]
Target Allocations	43
Maximum [Member] | Fixed income accounts
Defined Benefit Plan Disclosure [Line Items]
Target Allocations	56
Maximum [Member] | Real estate accounts
Defined Benefit Plan Disclosure [Line Items]
Target Allocations	11
Maximum [Member] | Other
Defined Benefit Plan Disclosure [Line Items]
Target Allocations	8