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Project Summit - Restructuring Charges (Details) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended 27 Months Ended
Oct. 31, 2019
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]                
Restructuring Charges   $ 0 $ 39,811,000   $ 206,426,000 $ 194,396,000 $ 48,597,000 $ 449,419,000
Project Summit Costs                
Restructuring Cost and Reserve [Line Items]                
Restructuring Charges $ 450,000,000 $ 0 39,811,000 $ 48,597,000 206,426,000 194,396,000    
EMPLOYEE SEVERANCE COSTS                
Restructuring Cost and Reserve [Line Items]                
Restructuring Charges         22,809,000 47,349,000 20,850,000 91,008,000
EMPLOYEE SEVERANCE COSTS | Project Summit Costs                
Restructuring Cost and Reserve [Line Items]                
Restructuring Charges     3,808,000 20,850,000 22,809,000 47,349,000    
PROFESSIONAL FEES AND OTHER                
Restructuring Cost and Reserve [Line Items]                
Restructuring Charges         183,617,000 147,047,000 $ 27,747,000 $ 358,411,000
PROFESSIONAL FEES AND OTHER | Project Summit Costs                
Restructuring Cost and Reserve [Line Items]                
Restructuring Charges     $ 36,003,000 $ 27,747,000 $ 183,617,000 $ 147,047,000