Stock-Based Compensation (Narrative) (Details) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2018	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020	Dec. 31, 2018 USD ($) company shares	Dec. 31, 2017	May 10, 2012 shares	May 09, 2012 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock units per common share | shares		1
Stock units converted to common stock ratio		1-to-1
Deferred Stock Compensation Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		15 months
Time period for receiving plan distributions, max		10 years
Time period for installment distributions, max		10 years
Stock-based retirement plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Automatic employer match, percentage		50.00%
Additional employer match upon certain profitability levels, percentage		50.00%
Discount market price purchase date, percentage		85.00%
ESUP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years
Esup
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Based Retirement Plans Employee Contributions		$ 4.0
Employer premium contribution to diversified investment accounts		$ 0.6
Performance Stock Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
Share based payment award was granted				100.00%
Percentage of award intended to pay out in stock				50.00%
Percentage of award intended to pay out in cash				50.00%
Reserved percentage of award intended to pay out in cash				100.00%
Awards based on TSR compared to peer group (as a percent)				50.00%
Awards based upon relative TSR for certain business unit employees (as a percent)				100.00%
Number of companies forming peer group | company				300
Measurement performance period, years				3 years
Performance Stock Unit Awards - EBIT CAGR Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life in years		2 years
Vesting period				3 years
Average payout percentage of base award				155.00%
Total shares paid | shares				100,000
Cash portion payout				$ 2.2
Award based on EBIT CAGR (as a percent)				50.00%
Performance measurement period		2 years
Measurement performance period, years	2 years			3 years
Discount Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Measurement performance period, years		1 year
Prior PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved percentage of award intended to pay out in cash					175.00%
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			66.00%
RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			33.00%
Performance Stock Unit Awards - EBIT CAGR Based, February 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average payout percentage of base award				114.00%
Total shares paid | shares				100,000
Cash paid				$ 4.1
Performance Stock Unit Awards - EBIT CAGR Based, February 2018 | Earnings before Interest and Taxes, Compound Annual Growth Rate, One-Time Vesting Period Transition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				2 years
Maximum | Stock-based retirement plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESUP participant contribution for stock or other investment purchases		10.00%
Premium contributions for ESUP participants		17.65%
Maximum | Performance Stock Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Base award percentage of total shareholder return		200.00%		200.00%
Maximum | Performance Stock Unit Awards - EBIT CAGR Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Base award percentage of total shareholder return				200.00%
Minimum | Performance Stock Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Base award percentage of total shareholder return				0.00%
Minimum | Performance Stock Unit Awards - EBIT CAGR Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Base award percentage of total shareholder return				0.00%
Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized cost of non-vested stock		$ 11.4
Weighted-average remaining contractual life		1 year
Flexible Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares against plan | shares						3	1