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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, 2022 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (in shares) | shares	331
Weighted Average Remaining Contractual Life (in years)	5 years 7 months 24 days
Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 115.35
Aggregate Intrinsic Value | $	$ 2
Number Exercisable (in shares) | shares	182
Weighted Average Remaining Contractual Life (in years)	5 years 18 days
Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 109.50
Aggregate Intrinsic Value | $	$ 2

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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