Debt and Other Financing Arrangements - Accounts Receivable Securitization Facility - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Line Of Credit Facility [Line Items]
Receivables facility amount outstanding	$ 75,100,000		$ 182,000,000.0
Letters of Credit Outstanding, Amount	14,800,000
Receivables Facility Remaining Borrowing Capacity	125,100,000
Receivables Facility Maximum Borrowing Availability	$ 215,000,000.0
Accounts Receivable Facility, Renewal Term, Month and Year	2023-06
Accounts Receivable Facility, Expiration Year And Month	2024-06
Receivables facility maximum borrowing capacity	$ 215,000,000.0	$ 200,000,000.0
Accounts Receivable Sold	$ 3,900,000
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Cancellation of provision on receivable facility, interest rate	0.75%