Supplemental Information (Earnings Per Share) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share Reconciliation [Abstract]
Weighted-average Common Shares Outstanding – Basic	262,800,000	258,400,000	262,500,000	258,200,000
Assumed settlement of performance share units and restricted stock units	600,000	900,000	700,000	1,000,000.0
Dilutive effect of forward sale agreements	0	200,000	0	100,000
Weighted-average Common Shares Outstanding – Diluted	263,400,000	259,500,000	263,200,000	259,300,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	0	0	0	0