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Share-based Payments (Tables)
6 Months Ended
Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Compensation Costs Related to Share-Based Payments

Three months ended

 

Six months ended

June 30, 

June 30, 

    

2023

    

2022

    

2023

    

2022

Selling, general and administrative:

 

  

 

  

 

  

 

  

Stock option compensation expense

$

1.6

$

3.0

$

4.3

$

5.6

Equity-classified share units

9.4

8.8

12.9

11.7

Liability-classified share units

0.5

1.1

0.5

0.3

Employee share purchase plan - employer contributions

 

0.8

 

0.7

 

1.3

 

1.4

12.3

13.6

19.0

19.0

Acquisition-related and integration costs:

 

 

 

Acceleration of share-based payments expense

0.9

5.9

Share-based continuing employment costs

 

0.9

 

2.1

 

1.9

 

4.2

 

1.8

 

2.1

 

7.8

 

4.2

$

14.1

$

15.7

$

26.8

$

23.2

Summary of Stock Option Activity

Stock options

Premium-priced stock options

WA

WA

Common

WA

remaining

Aggregate

Common

WA

remaining

Aggregate

shares under

exercise

contractual

intrinsic

shares under

exercise

contractual

intrinsic

option

  

price

  

life (in years)

  

value

  

option

  

price

  

life (in years)

  

value

Outstanding, December 31, 2022

2,730,295

$

46.88

7.3

$

31.2

1,118,432

$

91.26

4.7

$

Granted

 

 

Assumed in IAA acquisition (Note 5)

187,727

50.96

Exercised

(101,074)

38.59

1.7

Forfeited

(61,935)

45.96

 

 

(54,423)

91.12

 

 

Expired

(6,614)

 

61.55

 

 

 

 

 

Outstanding, June 30, 2023

2,748,399

$

47.44

6.4

$

35.6

1,064,009

$

91.27

4.1

$

Exercisable, June 30, 2023

2,070,214

$

44.03

5.8

$

33.6

43,242

$

91.21

 

1.7

$

Summary of Share Unit Activity

Equity-classified awards

Liability-classified awards

PSUs

PSUs with Market Conditions

RSUs

DSUs

WA grant

WA grant

WA grant

WA grant

date fair

date fair

date fair

date fair

  

Number

  

value

  

Number

  

value

  

Number

  

value

  

Number

  

value

Outstanding, December 31, 2022

 

662,634

$

51.71

102,879

$

66.08

68,024

$

58.32

 

108,365

$

39.35

Granted

 

12,027

 

57.04

 

333,778

 

52.11

 

12,300

 

52.55

Assumed in IAA acquisition (Note 5)

 

 

 

366,379

 

52.79

 

 

Vested and settled

 

(283,086)

 

42.23

 

(233,828)

 

52.85

 

 

Forfeited

 

(15,323)

 

58.60

(2,691)

 

65.45

(5,416)

 

60.07

 

 

Outstanding at June 30, 2023

 

376,252

$

58.73

100,188

$

66.10

528,937

$

52.97

 

120,665

$

40.70

Employee Stock Option [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Significant Assumptions Used to Estimate the Fair Value of Stock Options

Six months ended June 30, 

    

2022

    

Risk free interest rate

 

2.2

%

Expected dividend yield

 

1.74

%

Expected lives of the stock options

 

4

years

Expected volatility

 

31.7

%

Premium-priced Stock Options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Significant Assumptions Used to Estimate the Fair Value of Stock Options

Six months ended June 30, 

    

2022

Risk free interest rate

 

3.0

%  

Expected dividend yield

 

1.63

%  

Expected lives of the stock options

4

years

Expected volatility

 

30.2

%  

Performance Share Units With Market Conditions [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Significant Assumptions Used to Estimate the Fair Value of Stock Options

Six months ended June 30, 

    

2022

Risk free interest rate

 

2.7

%  

Expected dividend yield

 

1.63

%  

Expected lives of the PSUs

2

years

Expected volatility

 

33.4

%  

Average expected volatility of comparable companies

34.4

%  

IAA | Employee Stock Option [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Significant Assumptions Used to Estimate the Fair Value of Stock Options

Six months ended June 30, 

    

2023

    

Risk free interest rate

 

3.9

%  

Expected dividend yield

 

2.05

%  

Expected lives of the stock options

 

2

years

Expected volatility

 

33.3

%