Financing - Schedule of Short-term Debt and Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Short-Term Debt [Line Items]
Amount outstanding	$ 0.0		$ 0.0
Revolving Credit Facility | Commercial Paper
Short-Term Debt [Line Items]
Amount outstanding	0.0		0.0
Letters of Credit	3.6		3.7
Available capacity	746.4		$ 746.3
Maximum amount outstanding (based on daily outstanding balances)	0.0	$ 548.7
Average amount outstanding (based on daily outstanding balances)	$ 0.0	$ 164.7
Weighted average interest rates		4.91%