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Long-term incentive compensation (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost related to nonvested stock-based compensation arrangements under equity compensation and stock purchase plans	$ 230,270
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 6 months
Restricted stock units and Performance stock units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	706,000
Aggregate grant-date fair value	$ 77,279
Weighted-average expected life (in years)	3 years 6 months
Stock Appreciation Rights
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | shares	132,000
Aggregate grant-date fair value	$ 4,250
Weighted-average expected life (in years)	4 years 6 months

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Share-based compensation arrangement by share-based payment award, grant date fair value of options granted.

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