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Fair Value Measurements - Assets and Liabilities Measured at Fair Value On a Recurring Basis (Details) - Fair Value, Recurring - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Level 2    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Cash flow hedges $ 6 $ 9
Level 3    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Contingent consideration 2 46
Contingent consideration 32 0
Level 3 | Accounts Payable and Accrued Liabilities    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Contingent debt guarantee 4 0
Level 3 | Other Liabilities    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Contingent debt guarantee $ 0 $ 8