Lines of Credit and Financing Arrangements (Outstanding Debt Obligations) (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022	Nov. 01, 2016
Current maturities of long-term debt:
Finance lease obligations	$ 11,600,000	$ 11,200,000
Debt issuance costs	0	600,000
Total current maturities of long-term debt	361,600,000	710,600,000
Long-Term Debt:
Finance lease obligations	31,900,000	28,300,000
Debt issuance costs	(10,300,000)	(6,100,000)
Total long-term debt	1,121,600,000	814,200,000
Total debt	1,483,200,000	1,524,800,000
Asset Securitization
Current maturities of long-term debt:
Senior unsecured notes	0	350,000,000.0
Senior Unsecured Notes
Current maturities of long-term debt:
Senior unsecured notes	350,000,000.0	350,000,000.0
Long-Term Debt:
Domestic credit facility and senior unsecured notes	1,100,000,000	600,000,000.0
Debt instrument, interest rate, stated percentage			3.00%
Domestic Credit Facility
Current maturities of long-term debt:
Senior unsecured notes	350,000,000.0
Long-Term Debt:
Domestic credit facility and senior unsecured notes	0	192,000,000.0
Foreign Obligations
Long-Term Debt:
Short-term Debt	$ 0	$ 0