Stock Compensation Plans - SSAR's and Stock Option Outstanding (Detail) - SSAR's and Options [Member] - Over $65 $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (in shares) | shares	315
Weighted Average Remaining Contractual Life (in years)	4 years 8 months 15 days
Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 116.26
Aggregate Intrinsic Value | $	$ 0
Number Exercisable (in shares) | shares	194
Weighted Average Remaining Contractual Life (in years)	4 years 3 months 29 days
Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 109.59
Aggregate Intrinsic Value | $	$ 0