Earnings Per Share - Additional Information (Detail) shares in Millions	3 Months Ended
Mar. 31, 2021 $ / shares shares
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average exercise price of options \| $ / shares	$ 35.67
Stock Awards and Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares equivalents that would have been included in diluted average shares outstanding \| shares	1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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