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FAIR VALUE MEASUREMENTS - Summary of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Assets    
Available-for-sale investments: $ 1,481.0 $ 2,183.7
Bank time deposits    
Assets    
Available-for-sale investments: 0.0 2.5
Corporate debt securities    
Assets    
Available-for-sale investments: 980.3 1,390.8
Asset-backed securities    
Assets    
Available-for-sale investments: 366.6 512.6
United States government and agency securities    
Assets    
Available-for-sale investments: 131.6 147.3
Commercial paper    
Assets    
Available-for-sale investments: 0.0 127.7
Municipal securities    
Assets    
Available-for-sale investments: 2.5 2.8
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis    
Assets    
Cash equivalents 0.4 45.9
Investments held for deferred compensation plans 112.1 130.7
Derivatives 65.5 55.3
Total assets 1,659.0 2,415.6
Liabilities    
Derivatives 27.2 3.9
Contingent consideration liabilities 26.2 62.0
Other liability 14.0 14.0
Total liabilities 67.4 79.9
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Bank time deposits    
Assets    
Available-for-sale investments:   2.5
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Corporate debt securities    
Assets    
Available-for-sale investments: 980.3 1,390.8
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Asset-backed securities    
Assets    
Available-for-sale investments: 366.6 512.6
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | United States government and agency securities    
Assets    
Available-for-sale investments: 131.6 147.3
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Commercial paper    
Assets    
Available-for-sale investments:   127.7
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Municipal securities    
Assets    
Available-for-sale investments: 2.5 2.8
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 1    
Assets    
Cash equivalents 0.4 15.2
Investments held for deferred compensation plans 112.1 130.7
Derivatives 0.0 0.0
Total assets 149.6 174.3
Liabilities    
Derivatives 0.0 0.0
Contingent consideration liabilities 0.0 0.0
Other liability 0.0 0.0
Total liabilities 0.0 0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 1 | Bank time deposits    
Assets    
Available-for-sale investments:   0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 1 | Corporate debt securities    
Assets    
Available-for-sale investments: 0.0 0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 1 | Asset-backed securities    
Assets    
Available-for-sale investments: 0.0 0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 1 | United States government and agency securities    
Assets    
Available-for-sale investments: 37.1 28.4
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 1 | Commercial paper    
Assets    
Available-for-sale investments:   0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 1 | Municipal securities    
Assets    
Available-for-sale investments: 0.0 0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 2    
Assets    
Cash equivalents 0.0 30.7
Investments held for deferred compensation plans 0.0 0.0
Derivatives 65.5 55.3
Total assets 1,509.4 2,241.3
Liabilities    
Derivatives 27.2 3.9
Contingent consideration liabilities 0.0 0.0
Other liability 0.0 0.0
Total liabilities 27.2 3.9
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 2 | Bank time deposits    
Assets    
Available-for-sale investments:   2.5
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 2 | Corporate debt securities    
Assets    
Available-for-sale investments: 980.3 1,390.8
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 2 | Asset-backed securities    
Assets    
Available-for-sale investments: 366.6 512.6
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 2 | United States government and agency securities    
Assets    
Available-for-sale investments: 94.5 118.9
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 2 | Commercial paper    
Assets    
Available-for-sale investments:   127.7
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 2 | Municipal securities    
Assets    
Available-for-sale investments: 2.5 2.8
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 3    
Assets    
Cash equivalents 0.0 0.0
Investments held for deferred compensation plans 0.0 0.0
Derivatives 0.0 0.0
Total assets 0.0 0.0
Liabilities    
Derivatives 0.0 0.0
Contingent consideration liabilities 26.2 62.0
Other liability 14.0 14.0
Total liabilities 40.2 76.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 3 | Bank time deposits    
Assets    
Available-for-sale investments:   0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 3 | Corporate debt securities    
Assets    
Available-for-sale investments: 0.0 0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 3 | Asset-backed securities    
Assets    
Available-for-sale investments: 0.0 0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 3 | United States government and agency securities    
Assets    
Available-for-sale investments: 0.0 0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 3 | Commercial paper    
Assets    
Available-for-sale investments:   0.0
Estimate of Fair Value Measurement | Fair Value on a Recurring Basis | Level 3 | Municipal securities    
Assets    
Available-for-sale investments: $ 0.0 $ 0.0