Supplemental Information (Earnings Per Share) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share Reconciliation [Abstract]
Weighted-average Common Shares Outstanding – Basic	262,600,000	258,200,000	262,400,000	258,000,000.0
Assumed settlement of performance share units and restricted stock units	600,000	1,000,000.0	800,000	1,100,000
Dilutive effect of forward sale agreements	0	200,000	0	100,000
Weighted-average Common Shares Outstanding – Diluted	263,200,000	259,400,000	263,200,000	259,200,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	0	0	0	0