Earnings Per Share (Narrative) (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Weighted average shares excluded from denominator for diluted earnings per share because the stock options were anti-dilutive	1.0	0.5	0.7	0.4
Restricted stock units issued under stock incentive plan			0.6
2022 to 2024 [Member]
Restricted stock units issued under stock incentive plan		0.0		0.5
Restricted stock units excluded from the denominator for diluted earnings per share		0.0		0.2
2023 to 2025
Restricted stock units issued under stock incentive plan	0.0		0.6
Restricted stock units excluded from the denominator for diluted earnings per share	0.0		0.2