Lines of Credit and Financing Arrangements (Senior Unsecured Notes) (Details) - Senior Unsecured Notes	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jul. 30, 2020 USD ($)	Nov. 01, 2016 USD ($) debtSeries
Debt Instrument [Line Items]
Fixed interest rate for senior unsecured notes (as a percent)				3.00%
Maturity date of senior unsecured notes	Nov. 15, 2023
Minimum principal amount accelerated		$ 75,000,000
Notice period		30 days
2025 Notes [Member]
Debt Instrument [Line Items]
Senior unsecured notes			$ 300,000,000
Fixed interest rate for senior unsecured notes (as a percent)			1.35%
2027 Notes [Member]
Debt Instrument [Line Items]
Senior unsecured notes			$ 300,000,000
Fixed interest rate for senior unsecured notes (as a percent)			1.70%
2023 Notes [Member]
Debt Instrument [Line Items]
Number of senior unsecured notes | debtSeries				2
Senior unsecured notes				$ 350,000,000
2028 Notes
Debt Instrument [Line Items]
Senior unsecured notes	$ 500,000,000	$ 500,000,000
Fixed interest rate for senior unsecured notes (as a percent)	5.50%	5.50%