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Long-term Equity-based Compensation - Option and SAR Activity (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Shares Subject to Awards
Outstanding at Beginning of the Year (in shares) | shares	1,900,957
Granted (in shares) | shares	406,553
Exercised (in shares) | shares	(75,802)
Forfeited or Expired (in shares) | shares	(127,729)
Outstanding at December 31, 2019 (in shares) | shares	2,103,979
Vested and Expected to Vest at December 31, 2019 (in shares) | shares	2,039,134
Exercisable at December 31, 2019 (in shares) | shares	1,389,206
Weighted- average Exercise Price Per Share ($)
Outstanding at Beginning of the Year (in dollars per share) | $ / shares	$ 60.97
Granted (in dollars per share) | $ / shares	69.88
Exercised (in dollars per share) | $ / shares	60.84
Forfeited or Expired (in dollars per share) | $ / shares	73.59
Outstanding at December 31, 2019 (in dollars per share) | $ / shares	61.93
Vested and Expected to Vest at December 31, 2019 (in dollars per share) | $ / shares	61.57
Exercisable at December 31, 2019 (in dollars per share) | $ / shares	$ 56.26
Weighted- average Remaining Contractual Life (in Years)
Outstanding at December 31, 2021	6 years 6 months
Vested and Expected to Vest at December 31, 2021	6 years 5 months 8 days
Exercisable at December 31, 2021	5 years 6 months
Aggregate Intrinsic Value ($ In Millions)
Outstanding at December 31, 2021 | $	$ 12.1
Vested and Expected to Vest at December 31, 2021 | $	12.1
Exercisable at December 31, 2021 | $	$ 12.0

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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