Benefit Obligations (Schedule of Percentage of US and International Fair Value of Plan Assets) (Details)	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of US and international fair value of plan assets	100.00%	100.00%
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Percentage of US and international fair value of plan assets	85.00%	87.00%
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of US and international fair value of plan assets	15.00%	13.00%