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Summary of Information Relating to Options Outstanding and Exercisable (Details) - $ / shares
shares in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Outstanding as of 12/31/2021 11.3  
Weighted Average Remaining Contractual Life 6 years 1 month 6 days  
Options Outstanding Weighted-Average Exercise Price $ 58.83 $ 50.72
Exercisable as of 12/31/2021 6.7  
Options Exercisable Weighted-Average Exercise Price $ 44.80  
$20.01 - $30.00    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Range of Exercise Prices, Lower Limit 20.01  
Range of Exercise Prices, Upper Limit $ 30.00  
Outstanding as of 12/31/2021 0.2  
Weighted Average Remaining Contractual Life 6 months  
Options Outstanding Weighted-Average Exercise Price $ 26.98  
Exercisable as of 12/31/2021 0.2  
Options Exercisable Weighted-Average Exercise Price $ 26.98  
$30.01 - $40.00    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Range of Exercise Prices, Lower Limit 30.01  
Range of Exercise Prices, Upper Limit $ 40.00  
Outstanding as of 12/31/2021 1.3  
Weighted Average Remaining Contractual Life 2 years 2 months 12 days  
Options Outstanding Weighted-Average Exercise Price $ 33.93  
Exercisable as of 12/31/2021 1.3  
Options Exercisable Weighted-Average Exercise Price $ 33.93  
$40.01 - $50.00    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Range of Exercise Prices, Lower Limit 40.01  
Range of Exercise Prices, Upper Limit $ 50.00  
Outstanding as of 12/31/2021 2.4  
Weighted Average Remaining Contractual Life 3 years 10 months 24 days  
Options Outstanding Weighted-Average Exercise Price $ 44.07  
Exercisable as of 12/31/2021 2.4  
Options Exercisable Weighted-Average Exercise Price $ 44.07  
$50.01 - $60.00    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Range of Exercise Prices, Lower Limit 50.01  
Range of Exercise Prices, Upper Limit $ 60.00  
Outstanding as of 12/31/2021 2.7  
Weighted Average Remaining Contractual Life 6 years  
Options Outstanding Weighted-Average Exercise Price $ 51.98  
Exercisable as of 12/31/2021 2.7  
Options Exercisable Weighted-Average Exercise Price $ 51.98  
$60.01 - $70.00    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Range of Exercise Prices, Lower Limit 60.01  
Range of Exercise Prices, Upper Limit $ 70.00  
Outstanding as of 12/31/2021 0.1  
Weighted Average Remaining Contractual Life 6 years 10 months 24 days  
Options Outstanding Weighted-Average Exercise Price $ 65.52  
Exercisable as of 12/31/2021 0.1  
Options Exercisable Weighted-Average Exercise Price $ 65.52  
$70.01 - $80.00    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Range of Exercise Prices, Lower Limit 70.01  
Range of Exercise Prices, Upper Limit $ 80.00  
Outstanding as of 12/31/2021 3.1  
Weighted Average Remaining Contractual Life 8 years  
Options Outstanding Weighted-Average Exercise Price $ 75.36  
Exercisable as of 12/31/2021 0.0  
$80.01 - $90.00    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Range of Exercise Prices, Lower Limit $ 80.01  
Range of Exercise Prices, Upper Limit $ 90.00  
Outstanding as of 12/31/2021 1.5  
Weighted Average Remaining Contractual Life 9 years 6 months  
Options Outstanding Weighted-Average Exercise Price $ 84.70  
Exercisable as of 12/31/2021 0.0