Employee Benefit Plans - Investments in the pension plan measured at fair value (Details) $ in Millions	Dec. 31, 2023 USD ($)
Cash
Asset Category
Total investments	$ 28.9
Cash | Level 1
Asset Category
Total investments	28.9
Corporate notes
Asset Category
Total investments	31.7
Corporate notes | Level 2
Asset Category
Total investments	31.7
Treasury notes
Asset Category
Total investments	12.7
Treasury notes | Level 1
Asset Category
Total investments	12.7
Other investments(a)
Asset Category
Total investments	1.7
Other investments(a) | Level 1
Asset Category
Total investments	1.7
Total investments
Asset Category
Total investments	75.0
Total investments | Level 1
Asset Category
Total investments	43.3
Total investments | Level 2
Asset Category
Total investments	$ 31.7