Accounts Receivable - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 1,669.2		$ 1,238.4
Allowance for credit losses	$ 47.5		57.3
Percent accounts receivable outstanding, less than 60 days	96.00%
Account receivable sold under the RPAs	$ 389.5		$ 306.9
Fees and financing costs under the RPA	4.4	$ 4.4
Accounts receivable sold under repurchase agreement	1,900.0	1,800.0
Amount collected of accounts receivables under repurchase agreement	$ 2,000.0	$ 1,700.0
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale price of receivables, percentage of sold amount	100.00%
London Interbank Offered Rate (LIBOR) | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivable, basis spread on variable rate	3.25%
London Interbank Offered Rate (LIBOR) | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivable, basis spread on variable rate	1.00%