Fair Value Measurements - Fair Value Level 3 of Significant Unobservable Inputs (Details) $ in Millions	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability value	$ 38.1	$ 58.1
Discounted cash flow | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability value	$ 38.1
Discounted cash flow | Fair Value, Inputs, Level 3 | Fair Value, Recurring | Discount rate | Minimum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0
Discounted cash flow | Fair Value, Inputs, Level 3 | Fair Value, Recurring | Discount rate | Maximum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0.073
Discounted cash flow | Fair Value, Inputs, Level 3 | Fair Value, Recurring | Discount rate | Weighted Average
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0.017
Discounted cash flow | Fair Value, Inputs, Level 3 | Fair Value, Recurring | Probability of payment | Minimum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0.25
Discounted cash flow | Fair Value, Inputs, Level 3 | Fair Value, Recurring | Probability of payment | Maximum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	1
Discounted cash flow | Fair Value, Inputs, Level 3 | Fair Value, Recurring | Probability of payment | Weighted Average
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0.86