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Equity Based Compensation (Disclosure of Share-based Compensation Arrangements by Share-based Payment Award) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options, Grants in Period, Weighted Average Exercise Price	$ 138.34		$ 106.53	$ 129.01
Options, Outstanding, Intrinsic Value	$ 80.6
Options, Exercisable, Intrinsic Value	$ 70.0
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, Number, Beginning Balance	244,980
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	185,311
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	(59,453)
Forfeited	(8,356)
Outstanding, Number, Ending Balance	359,551	[1]	244,980
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options, Grants in Period, Weighted Average Exercise Price	$ 138.34
Share-based Compensation Arrangement by Share-based Payment Award, Options, Other Increases (Decreases) in Period	(2,931)
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, Number, Beginning Balance	566,435
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	111,850
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	(241,969)
Forfeited	(19,010)
Outstanding, Number, Ending Balance	417,306	[1]	566,435
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Other Increases (Decreases) in Period	0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, Number, Beginning Balance	2,221,287
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	129,146
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	(454,459)
Forfeited	(25,392)
Outstanding, Number, Ending Balance	1,870,582		2,221,287
Options exercisable	1,605,172
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options, Outstanding, Weighted Average Exercise Price, Beginning of Period	$ 112.05
Options, Grants in Period, Weighted Average Exercise Price	138.34
Exercised / Lapsed	91.40
Forfeited	125.56
Options, Outstanding, Weighted Average Exercise Price, End of Period	118.70		$ 112.05
Options exercisable	$ 118.18
[1] Amount outstanding at December 31, 2023, includes the amount of shares to be issued under RSUs expected to vest and number of Performance Shares to be issued at target performance. The amount of shares do not reflect potential increases or decreases that may result from the performance factor results except for the 2021 – 2023 grants which vested at December 31, 2023.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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The addition or reduction in the number of reserved shares that could potentially be issued under the option plan attributable to reasons other than grants, exercises, forfeitures, and expirations during the reporting 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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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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