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Financing Arrangements - Additional Information (Detail) |  |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 03, 2017 USD ($) | Jul. 17, 2017 USD ($) Extension | Oct. 27, 2017 USD ($) | Apr. 28, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |
Sale leaseback transaction, remaining financing obligations |  |  | $ 130,000,000 | $ 130,000,000
Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility, amount |  | $ 1,000,000,000 |  |
Credit facility, date expiry |  | Dec. 10, 2021 |  |
Credit facility, increase in facility |  | $ 300,000,000 |  |
Credit facility, number of extensions | Extension |  | 2 |  |
Credit facility, extensions period |  | 1 year |  |
Credit facility, amounts drawn |  |  | 0 | 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 |  |  | $ 719,000,000 | $ 500,000,000
Weighted-average interest rate |  |  | 1.43% | 1.26%
Commercial Paper | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount |  | $ 1,000,000,000 |  |
Debt instrument maturity period |  | 397 days | 44 days | 38 days
Commercial Paper | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument maturity period |  |  | 13 days | 7 days
Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount |  |  | $ 2,300,000,000 | $ 1,500,000,000
Proceeds from issuance of notes, net of discount and issuance costs |  |  | 795,000,000 |
Senior Notes | Due September 2019 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount |  |  | $ 400,000,000 | 0
Notes issued, interest rate |  |  | 2.00% |
Notes due date |  |  | Sep. 27, 2019 |
Senior Notes | Due June 2021 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount |  |  | $ 500,000,000 | 500,000,000
Notes issued, interest rate |  |  | 3.375% |
Senior Notes | Due September 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount |  |  | $ 400,000,000 | 0
Notes issued, interest rate |  |  | 3.30% |
Notes due date |  |  | Sep. 29, 2024 |
Senior Notes | Due December 2017 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount |  |  | $ 750,000,000 | 750,000,000
Notes issued, interest rate |  |  | 2.00% |
Notes due date, month and year |  |  | 2017-12 |
Senior Notes | Due December 2017 | Subsequent Event |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes aggregate redemption price, plus accrued and unpaid interest | $ 751,000,000 |  |  |
Notes repurchased date | Nov. 03, 2017 |  |  |
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% |

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