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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Summarized Activity of Stock Options

The following table summarizes activity for our stock options for the year ended December 31, 2021 (share data in thousands):

						Number of Shares						Weighted- Average Exercise Price						Weighted- Average Remaining Contractual Term						Aggregate Intrinsic Value (In millions)
Outstanding at beginning of period						201						$	24.07
Granted						—						N/A
Exercised						(76)						$	24.77
Cancelled/expired/forfeited						—						N/A
Outstanding at end of period						125						$	23.65					3.2 years						$	3.0
Exercisable at end of period						125						$	23.65					3.2 years						$	3.0

Schedule of Restricted Stock Units

Nonvested performance shares as of December 31, 2021 and changes during the year ended December 31, 2021 were as follows (share data in thousands):

						Number of Shares						Weighted- Average Grant Date Fair Value
Nonvested at beginning of period						451						$	56.15
Adjustment to assumed vesting percentage						52						$	58.51
Granted						159						$	59.39
Vested						(104)						$	63.81
Cancelled/forfeited						(13)						$	56.23
Nonvested at end of period						545						$	55.90

The actual number of shares in which each participant vests is dependent upon achievement of certain return on invested capital and diluted earnings per share targets over a three-year performance period. The number of shares in which participants can vest ranges from zero to 200% of the initial performance shares granted, to be determined upon completion of the three-year performance period. The nonvested shares at the end of the period in the table above assumes weighted-average vesting of 129%.

The actual tax benefits realized related to the performance shares vested during the year ended December 31, 2021 totaled $1.0 million.

Restricted Stock Units

Nonvested restricted stock units as of December 31, 2021 and changes during the year ended December 31, 2021 were as follows (share data in thousands):

						Number of Shares						Weighted- Average Grant Date Fair Value
Nonvested at beginning of period						185						$	55.96
Granted						150						$	60.29
Vested						(107)						$	58.45
Cancelled/forfeited						(7)						$	57.09
Nonvested at end of period						221						$	57.66

Schedule of Summarized Activity of Stock Appreciation

The following table summarizes activity for our stock appreciation rights for the year ended December 31, 2021 (unit data in thousands):

						Number of Units						Weighted- Average Exercise Price						Weighted- Average Remaining Contractual Term						Aggregate Intrinsic Value (In millions)
Outstanding at beginning of period						40						$	24.04
Granted						—						N/A
Exercised						(13)						$	24.97
Cancelled/expired/forfeited						—						N/A
Outstanding at end of period						27						$	23.62					3.2 years						$	0.7
Exercisable at end of period						27						$	23.62					3.2 years						$	0.7

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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