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v3.19.2

Financing Arrangements - Additional Information (Detail) |  | 12 Months Ended
--- | --- | ---
Jul. 17, 2017 USD ($) Extension | Apr. 26, 2019 USD ($) | Apr. 27, 2018 USD ($) | Apr. 28, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |
Non-cash sale of properties, net book value |  |  | $ 54,000,000 | $ 9,000,000
Non-cash extinguishment of financing obligations |  |  | 130,000,000 | 19,000,000
Gain on sale of properties |  |  | 76,000,000 | $ 10,000,000
Sale leaseback transaction, remaining financing obligations |  | $ 0 | 0 |
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 |  |
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 |  | $ 249,000,000 | $ 385,000,000 |
Weighted-average interest rate |  | 2.73% | 2.29% |
Commercial Paper | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount | $ 1,000,000,000 |  |  |
Debt instrument maturity period | 397 days | 38 days | 32 days |
Commercial Paper | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument maturity period |  | 27 days | 19 days |
Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount |  | $ 1,550,000,000 | $ 1,550,000,000 |
Senior Notes | Due September 2019 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes issued, principal amount |  | $ 400,000,000 | 400,000,000 |
Notes issued, interest rate |  | 2.00% |  |
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 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 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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