Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time.

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Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Accelerated Share Repurhase Program - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions			3 Months Ended
	Apr. 26, 2019	Feb. 20, 2019	Mar. 31, 2020
Accelerated Share Repurchases [Line Items]
Accelerated share repurchases, final price paid per share (in usd per share)			$ 180.33
February 20, 2019
Accelerated Share Repurchases [Line Items]
Accelerated share repurchase payment		$ 500,000,000
February 20, 2019 \| Accelerated Share Repurchases
Accelerated Share Repurchases [Line Items]
Treasury shares repurchased (in shares)		2.2
April 26, 2019 \| Accelerated Share Repurchases
Accelerated Share Repurchases [Line Items]
Treasury shares repurchased (in shares)	0.6		2.8