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Long-term incentive compensation - Additional Information (Detail)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Jan. 23, 2020
$ / shares
Nov. 04, 2019
shares
Mar. 31, 2020
USD ($)
shares
Mar. 31, 2019
USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Long-term incentive program (LTIP) expense     $ 25,594 $ 13,107
Stock-based compensation expense     19,870 12,110
Estimated tax benefits recorded for stock-based compensation     2,584 1,495
Compensation cost related to LTIP awards     66,302  
Unrecognized compensation cost related to nonvested stock-based compensation arrangements under equity compensation and stock purchase plans     $ 247,420  
Unrecognized compensation cost related to nonvested stock-based compensation arrangements under stock-based component of LTIP costs, weighted average remaining period (in years)     1 year 8 months 12 days  
Longterm Incentive Compensation cash awards, number of awards outstanding     0  
Share-based Payment Arrangement, Expense, Tax Benefit     $ 199 151
Restricted and Performance Stock Units        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-settled awards granted (in shares) | shares     950  
Aggregate grant-date fair value     $ 72,648  
Weighted-average expected life (in years)     3 years 6 months  
Stock Appreciation Rights        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-settled awards granted (in shares) | shares     2,765  
Aggregate grant-date fair value     $ 73,833  
Weighted-average expected life (in years)     4 years 9 months 18 days  
Premium Priced Stock-Settled Stock Appreciation Rights        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-settled awards granted (in shares) | shares   2,500    
Premium Priced Award Base Price Per Share | $ / shares $ 67.80      
Premium To The Tender Offer Share Purchase Price 20.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date Nov. 04, 2024      
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Holding Period, End Date Nov. 04, 2024      
Premium Priced Stock-Settled Stock Appreciation Rights | Vesting period, tranche one        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date Nov. 04, 2023      
Premium Priced Stock-Settled Stock Appreciation Rights | Vesting period, tranche two        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date Nov. 04, 2022      
General and Administrative Expense        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-based compensation expense     $ 19,870 $ 10,301