Fair Value Measurements - Fair Value Measurements (Details) - Recurring - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Financial Assets
Trading securities held in deferred compensation plan	$ 18.4	$ 16.8
Interest rate swaps	10.9	9.4
Cross-currency interest rate swaps	16.7	15.7
Total	46.0	41.9
Financial Liabilities
Deferred compensation plans	25.7	24.7
Cross-currency interest rate swaps	39.7	63.1
Contingent consideration	48.4	42.2
Total	113.8	130.0
Level 1
Financial Assets
Trading securities held in deferred compensation plan	18.4	16.8
Interest rate swaps	0.0	0.0
Cross-currency interest rate swaps	0.0	0.0
Total	18.4	16.8
Financial Liabilities
Deferred compensation plans	25.7	24.7
Cross-currency interest rate swaps	0.0	0.0
Contingent consideration	0.0	0.0
Total	25.7	24.7
Level 2
Financial Assets
Trading securities held in deferred compensation plan	0.0	0.0
Interest rate swaps	10.9	9.4
Cross-currency interest rate swaps	16.7	15.7
Total	27.6	25.1
Financial Liabilities
Deferred compensation plans	0.0	0.0
Cross-currency interest rate swaps	39.7	63.1
Contingent consideration	0.0	0.0
Total	39.7	63.1
Level 3
Financial Assets
Trading securities held in deferred compensation plan	0.0	0.0
Interest rate swaps	0.0	0.0
Cross-currency interest rate swaps	0.0	0.0
Total	0.0	0.0
Financial Liabilities
Deferred compensation plans	0.0	0.0
Cross-currency interest rate swaps	0.0	0.0
Contingent consideration	48.4	42.2
Total	$ 48.4	$ 42.2