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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Flexible Stock Plan Options
At December 31, 2022, the following common shares were authorized for issuance under the Plan:
 
 Shares Available for Issuance Maximum Number of Authorized Shares
Unexercised options.3 .3 
Outstanding stock units—vested3.5 9.1 
Outstanding stock units—unvested1.0 2.9 
Available for grant 8.5 8.5 
Authorized for issuance at December 31, 202213.3 20.8 
Components Of Stock-Based Compensation The following table recaps the impact of stock-based compensation on the results of operations for each of the periods presented:
Year Ended December 31
202220212020
To Be Settled With StockTo Be Settled In CashTo Be Settled With StockTo Be Settled In CashTo Be Settled With StockTo Be Settled In Cash
Executive Stock Unit (ESU) program contributions 1
$3.7 $.7 $4.0 $.6 $3.5 $.7 
Discounts on various stock awards:
Deferred Compensation Program 2
1.6  1.5 — 2.2 — 
ESU program 1
1.4  1.1 — 1.4 — 
Discount Stock Plan 3
.8  .9 — .9 — 
Performance Stock Unit (PSU) awards: 4
     PSU - TSR based 4A
2.5 (.5)3.1 (1.0)3.2 (.7)
     PSU - EBIT CAGR based 4B
(1.7)(2.0)4.7 5.0 (1.9)(2.0)
Restricted Stock Unit (RSU) awards 5
10.2  8.2 — 6.8 — 
Other, primarily non-employee directors restricted stock1.0  .4 — .9 — 
Total stock-related compensation expense (income)19.5 $(1.8)23.9 $4.6 17.0 $(2.0)
Employee contributions for above stock plans10.6 10.3 12.2 
Total stock-based compensation$30.1 $34.2 $29.2 
Tax benefits on stock-based compensation expense$4.7 $5.8 $4.0 
Tax benefits on stock-based compensation payments.6 3.4 2.5 
Total tax benefits associated with stock-based compensation$5.3 $9.2 $6.5 
Schedule of Stock-based Compensation Assets and Liabilities The following table recaps the impact of stock-based compensation on assets and liabilities for each of the periods presented:
20222021
CurrentLong-termTotalCurrentLong-termTotal
Assets:
Diversified investments associated with the ESU program 1
$3.1 $39.7 $42.8 $3.6 $47.4 $51.0 
Liabilities:
ESU program 1
$3.1 $40.9 $44.0 $3.6 $47.3 $50.9 
Performance Stock Unit (TSR) award 4A
 .6 .6 — 1.1 1.1 
Performance Stock Unit (EBIT) award 4B
 .7 .7 3.5 2.7 6.2 
Other - primarily timing differences between employee withholdings and related employer contributions to be submitted to various plans' trust accounts5.9 — 5.9 5.6 — 5.6 
Total liabilities associated with stock-based compensation$9.0 $42.2 $51.2 $12.7 $51.1 $63.8 
Deferred Compensation Arrangement with Individual Disclosure, Postretirement Benefits
OptionsUnitsCash
Aggregate amount of compensation deferred during 2022$.1 $4.7 $.4 
Discount Stock Plan
Average 2022 purchase price per share (net of discount)$31.07 
2022 number of shares purchased by employees.2 
Shares purchased since inception in 198223.8 
Maximum shares under the plan27.0 
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Performance Based Units Table
Below is a summary of shares and grant date fair value related to PSU awards for the periods presented:
 
 Year Ended December 31
 202220212020
TSR Based
Total shares base award.1 .1 .1 
Grant date per share fair value$41.13 $49.43 $38.23 
Risk-free interest rate1.7 %.2 %1.4 %
Expected life in years3.03.03.0
Expected volatility (over expected life)45.2 %44.3 %24.0 %
Expected dividend yield (over expected life)4.6 %3.7 %3.6 %
EBIT CAGR Based
Total shares base award.1 .1 .1 
Grant date per share fair value$32.88 $38.77 $40.52 
Vesting period in years3.03.03.0
Three-Year Performance Cycle for PSU - TSR Based
Award YearCompletion DateTSR Performance
Relative to the Peer Group (1%=Best)
Payout as a
Percent of the
Base Award
Number of Shares
Distributed
Cash PortionDistribution Date
2018December 31, 202060 th percentile56.0%<.1 million$2.0 First quarter 2021
2019December 31, 202178 th percentile—%— million$— First quarter 2022
2020December 31, 202287 th percentile—%— million$— First quarter 2023
Three-Year Performance Cycle for PSU - EBIT CAGR Based
Award YearCompletion DatePayout as a
Percent of the
Base Award
Number of Shares
Distributed
Cash PortionDistribution Date
2018December 31, 202016.0%<.1 million$.4 First quarter 2021
2019December 31, 2021127.0%<.1 million$3.5 First quarter 2022
2020December 31, 2022—%— million$— First quarter 2023
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
Stock unit information for the plans discussed above is presented in the table below:
DSUESUPSURSUTotal UnitsWeighted
Average
Grant Date
Fair Value
per Unit
Aggregate
Intrinsic
Value
Unvested at December 31, 2021— — .8 .2 1.0 $44.41  
Granted based on current service .2 .2 — .3 .7 35.78  
Granted based on future conditions*— — .3 — .3 17.99 
Vested (.2)(.2)(.1)(.3)(.8)38.21 
Forfeited*— — (.2)— (.2)21.33 
Unvested at December 31, 2022  .8 .2 1.0 $42.34 $30.7 
Fully vested shares available for issuance at December 31, 20223.5 $111.6 

*PSU awards are presented at maximum payout of 200% at grant date and when forfeited.
Stock Units Converted To Common Stock
 Year Ended December 31
 202220212020
Total intrinsic value of vested stock units converted to common stock$5.7 $10.5 $11.7