Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Effective income tax rates	23.40%	22.10%	23.30%	23.20%
Liability for income taxes associated with uncertain tax positions	$ 4.8		$ 4.8		$ 3.2
Offsetting Tax Benefits To Liability For Income Taxes Associated With Uncertain Tax Positions	$ 2.8		2.8		2.2
Other tax benefits related to interest and penalties of uncertain tax positions			$ 1.6		$ 0.0
Unrecognized tax positions increase decrease, months			It is reasonably possible that the unrecognized benefit with respect to certain of the Company’s unrecognized tax positions may increase or decrease within the next 12 months. Any such change may be the result of either ongoing audits or the expiration of federal and state statutes of limitations for the assessment of taxes
Minimum income tax on certain large corporations percentage as part of Inflation Reduction Act			15.00%
Excise tax percentage on corporate stock repurchases as part of Inflation Reduction Act			1.00%