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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, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]      
Options, Grants in Period, Weighted Average Exercise Price $ 106.53 $ 129.01 $ 117.85
Options, Outstanding, Intrinsic Value $ 68.7    
Options, Exercisable, Intrinsic Value $ 57.8    
Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding, Number, Beginning Balance 340,405    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures 78,687    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period 0    
Forfeited (1,511)    
Outstanding, Number, Ending Balance 244,980 [1] 340,405  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]      
Options, Grants in Period, Weighted Average Exercise Price $ 106.53    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Other Increases (Decreases) in Period (172,601)    
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding, Number, Beginning Balance 379,888    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures 219,553    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period (21,552)    
Forfeited (11,454)    
Outstanding, Number, Ending Balance 566,435 [1] 379,888  
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 2,222,714    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures 258,327    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period (251,305)    
Forfeited (8,449)    
Outstanding, Number, Ending Balance 2,221,287 2,222,714  
Options exercisable 1,818,128    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]      
Options, Outstanding, Weighted Average Exercise Price, Beginning of Period $ 107.39    
Options, Grants in Period, Weighted Average Exercise Price 106.53    
Exercised / Lapsed 64.79    
Forfeited 124.29    
Options, Outstanding, Weighted Average Exercise Price, End of Period 112.05 $ 107.39  
Options exercisable $ 111.35    
[1] Amount outstanding at December 31, 2022, includes the amount of shares to be issued under RSUs expected to vest and number of shares to be issued under performance continent awards 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 2020 – 2022 grants which vested as of December 31, 2022.