Pension And Postretirement Benefits (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Percentage of non-matching contribution to participants	3.00%
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, benefit obligation	$ 518.5	$ 450.4
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year	19.2
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year	0.3
Defined benefit plan, benefit obligation	1,168.7	1,031.0	$ 1,074.7
Expected cash contribution in the next fiscal year based on current actuarial calculations	21.4
Defined benefit plans contribution by the company	4.2	57.5
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year	0.0
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year	1.1
Defined benefit plan, benefit obligation	29.0	29.0	7.9
Defined benefit plans contribution by the company	2.3	1.4
Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, benefit obligation	650.2	$ 580.6
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax	0.1
Defined benefit plan, benefit obligation	3.4
Defined benefit plans contribution by the company	$ 2.2
Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	43.00%	39.00%
Equity securities [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	26.00%
Equity securities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	62.00%
Equity securities [Member] | Minimum [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	35.00%
Equity securities [Member] | Maximum [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	75.00%
Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	26.00%	24.00%
Fixed income securities [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	34.00%
Fixed income securities [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	17.00%
Fixed income securities [Member] | Minimum [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	15.00%
Fixed income securities [Member] | Maximum [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	35.00%
Alternative assets/Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	29.00%	32.00%
Alternative assets/Other [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	38.00%
Alternative assets/Other [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	20.00%
Alternative assets/Other [Member] | Minimum [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	10.00%
Alternative assets/Other [Member] | Maximum [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	35.00%
Cash [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	1.00%
Cash [Member] | Minimum [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	0.00%
Cash [Member] | Maximum [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	10.00%
Cash and cash equivalents [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	2.00%
Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	5.00%
Savings And Investment Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans contribution by the company	$ 11.0	$ 9.9	8.5
2% Non-Matching Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans contribution by the company	$ 13.4	$ 12.5	$ 11.0
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan employees, percentage	18.00%
UNITED STATES | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	7.25%	7.75%	7.75%
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan employees, percentage	8.00%
Foreign Plan [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	5.34%	6.49%	6.45%