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Unaudited Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Statement of Comprehensive Income [Abstract]        
Tax on cash flow hedge gain (loss) $ (8,544,000) $ (4,088,000) $ (4,217,000) $ (11,752,000)
Actuarial gain on pension obligations, tax $ 0 $ 0 $ 254,000 $ 0