Number of extensions potentially available to the borrower under the line of credit facility.

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Write-off of unamortized discount and issuance costs.

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Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Gross amount of debt extinguished.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Reflects the difference between the fair value of payments made to legally extinguish a debt and its carrying value at that time. This item excludes the write-off of amounts previously capitalized as debt issuance costs.

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Date the credit facility terminates, in CCYY-MM-DD format.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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Financing Arrangements - Additional Information (Detail)			1 Months Ended		3 Months Ended	9 Months Ended		12 Months Ended
	Jan. 22, 2021 USD ($) Extension	Jul. 27, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jul. 28, 2017 USD ($)	Jul. 31, 2020 USD ($)	Jan. 29, 2021 USD ($)	Jan. 24, 2020 USD ($)	Apr. 24, 2020 USD ($)
Debt Instrument [Line Items]
Issuance of debt, net of issuance costs						$ 2,057,000,000	$ 0
Commercial paper notes						0		$ 522,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, amount	$ 1,000,000,000.0
Credit facility, maturity	Jan. 22, 2026
Credit facility, number of extensions \| Extension	2
Credit facility, extensions period	1 year
Credit facility, amounts drawn						0
Revolving Credit Facility \| Letter Of Credit Sub Facility
Debt Instrument [Line Items]
Credit facility, amount	$ 50,000,000
Commercial Paper
Debt Instrument [Line Items]
Notes issued, principal amount								$ 523,000,000
Issuance of debt, net of issuance costs						75,000,000
Weighted-average interest rate								2.01%
Proceeds from repayments of debt						176,000,000
Commercial Paper \| Maximum
Debt Instrument [Line Items]
Notes issued, principal amount				$ 1,000,000,000.0
Debt instrument maturity period				397 days				3 months
Senior Notes
Debt Instrument [Line Items]
Notes issued, principal amount						2,650,000,000		$ 1,150,000,000
Issuance of debt, net of issuance costs			$ 2,000,000,000.0
Cash redemption premium					$ 13,000,000
Write-off of unamortized discount and issuance costs					1,000,000
Senior Notes \| Other Income (Expense), Net
Debt Instrument [Line Items]
Loss on extinguishment of debt					$ 14,000,000
Senior Notes \| Due June 2027
Debt Instrument [Line Items]
Notes issued, principal amount			$ 550,000,000			550,000,000		0
Notes issued, interest rate			2.375%
Senior Notes \| Due June 2025
Debt Instrument [Line Items]
Notes issued, principal amount			$ 750,000,000			750,000,000		0
Notes issued, interest rate			1.875%
Senior Notes \| Due June 2030
Debt Instrument [Line Items]
Notes issued, principal amount			$ 700,000,000			700,000,000		0
Notes issued, interest rate			2.70%
Senior Notes \| Due June 2021
Debt Instrument [Line Items]
Notes issued, principal amount						0		500,000,000
Notes issued, interest rate		3.375%
Extinguishment of debt amount		$ 513,000,000
Senior Notes \| Due September 2024
Debt Instrument [Line Items]
Notes issued, principal amount						$ 400,000,000		400,000,000
Notes issued, interest rate						3.30%
Senior Notes \| Due December 2022
Debt Instrument [Line Items]
Notes issued, principal amount						$ 250,000,000		$ 250,000,000
Notes issued, interest rate						3.25%