Debt - Revolving Loan Arrangements (Details) $ in Millions	Mar. 31, 2021 USD ($)
Revolving lines of credit
Total Amount Committed by Lenders	$ 720.2
Outstanding Letters of Credit	120.4
Total Committed Amount Available	$ 599.8
2019 Credit Agreement | US Dollar revolving loan
Revolving lines of credit
Weighted Average Interest Rate (as a percent)	1.30%
Total Amount Committed by Lenders	$ 600.0
Outstanding Letters of Credit	0.2
Total Committed Amount Available	$ 599.8
Bank guarantees and working capital line
Revolving lines of credit
Weighted Average Interest Rate (as a percent)	0.00%
Total Amount Committed by Lenders	$ 120.2
Outstanding Letters of Credit	$ 120.2