Pension and Postretirement Benefits (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 1,152.1	$ 1,259.8
Percentage of non-matching contribution to participants	3.00%
Common Stock
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	4.00%	4.00%
Savings And Investment Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 12.0	$ 11.8	$ 11.0
2% Non-Matching Contribution
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 14.6	$ 14.5	13.4
Actively Managed U.S. Equities
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	44.00%	44.00%
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	31.00%	26.00%
Alternative assets/Other
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	22.00%	27.00%
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected future employer cash contributions	$ 18.9
Projected benefit obligation	1,152.1	$ 1,259.8	1,168.7
Employer contributions	26.7	26.1
Supplemental Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Pre-tax settlement gain			0.1
Projected benefit obligation	3.7	3.9
Employer contributions	$ 0.2	$ 0.2	$ 2.2
United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan employees, percentage	16.00%
Percentage of combined expected actuarial losses	1.00%	1.00%
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on plan assets	6.50%	7.25%	7.25%
United States | Pension Plan | Actively Managed U.S. Equities
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	64.40%
United States | Pension Plan | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	22.30%
United States | Pension Plan | Alternative assets/Other
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	12.60%
United States | Pension Plan | Cash
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	0.70%
United States | Pension Plan | Minimum | Actively Managed U.S. Equities
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on plan assets	25.00%
United States | Pension Plan | Minimum | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on plan assets	15.00%
United States | Pension Plan | Minimum | Alternative assets/Other
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on plan assets	10.00%
United States | Pension Plan | Minimum | Cash
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	0.00%
United States | Pension Plan | Maximum | Actively Managed U.S. Equities
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on plan assets	75.00%
United States | Pension Plan | Maximum | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on plan assets	35.00%
United States | Pension Plan | Maximum | Alternative assets/Other
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on plan assets	35.00%
United States | Pension Plan | Maximum | Cash
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	10.00%
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan employees, percentage	9.00%
Percentage of combined expected actuarial gains	2.00%	5.00%
Foreign Plan | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on plan assets	4.45%	5.31%	5.34%
Foreign Plan | Pension Plan | Actively Managed U.S. Equities
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	24.90%
Foreign Plan | Pension Plan | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	39.80%
Foreign Plan | Pension Plan | Alternative assets/Other
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	30.50%
Foreign Plan | Pension Plan | Cash
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	4.80%