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Long-term Incentive Compensation and Shareholders’ Equity - Summary of Range of Exercise Prices (Details)
12 Months Ended
Dec. 31, 2018
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Awards outstanding (in shares) | shares 6,162,797
Weighted average exercise price (USD per share) $ 69.90
Awards exercisable (in shares) | shares 1,422,529
Weighted average exercise price (USD per share) $ 73.39
$50.01–$60.00  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Awards outstanding (in shares) | shares 131,470
Weighted average exercise price (USD per share) $ 57.90
Awards exercisable (in shares) | shares 0
Weighted average exercise price (USD per share) $ 0
Range of exercise prices, lower range (USD per share) 50.01
Range of exercise prices, upper range (USD per share) $ 60.00
$60.01–$70.00  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Awards outstanding (in shares) | shares 4,083,162
Weighted average exercise price (USD per share) $ 66.66
Awards exercisable (in shares) | shares 757,237
Weighted average exercise price (USD per share) $ 68.96
Range of exercise prices, lower range (USD per share) 60.01
Range of exercise prices, upper range (USD per share) $ 70.00
$70.01–$80.00  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Awards outstanding (in shares) | shares 1,351,997
Weighted average exercise price (USD per share) $ 74.78
Awards exercisable (in shares) | shares 346,316
Weighted average exercise price (USD per share) $ 73.81
Range of exercise prices, lower range (USD per share) 70.01
Range of exercise prices, upper range (USD per share) $ 80.00
$80.01–$90.00  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Awards outstanding (in shares) | shares 596,168
Weighted average exercise price (USD per share) $ 83.60
Awards exercisable (in shares) | shares 318,976
Weighted average exercise price (USD per share) $ 83.47
Range of exercise prices, lower range (USD per share) 80.01
Range of exercise prices, upper range (USD per share) $ 90.00