Supplemental Information (Earnings Per Share) (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share Reconciliation [Abstract]
Weighted-average Common Shares Outstanding – Basic	262,800,000	258,400,000	256,300,000
Assumed settlement of performance share units and restricted stock units	600,000	1,000,000.0	1,300,000
Dilutive effect of forward sale agreements	0	100,000	0
Weighted Average Number of Shares Outstanding, Diluted (in shares)	263,400,000	259,500,000	257,600,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	0	0	0