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Short-term and Long-term Debt - Summary of Short-term and Long-term Debt (Detail) - USD ($) $ in Millions | Dec. 28, 2019 | Dec. 29, 2018 | Feb. 20, 2018
--- | --- | --- | ---
Schedule Of Debt Instruments [Line Items] |  |  |
Other debt | $ 199.8 | $ 182.3 |
Long-term debt including current maturities | 1,149.8 | 1,132.3 |
Less: notes payable and current maturities of long-term debt: |  |  |
Commercial paper borrowings | (193.6) | (177.1) |
Other notes | (9.3) | (9.2) |
Notes payable and current maturities of long-term debt | (202.9) | (186.3) |
Total long-term debt | $ 946.9 | 946.0 |
6.125% unsecured notes due 2021 |  |  |
Schedule Of Debt Instruments [Line Items] |  |  |
Unsecured notes, interest rate | 6.125% |  |
Unsecured notes. noncurrent | $ 250.0 | 250.0 |
3.25% unsecured notes due 2027 |  |  |
Schedule Of Debt Instruments [Line Items] |  |  |
Unsecured notes, interest rate | 3.25% |  |
Unsecured notes. noncurrent | $ 300.0 | 300.0 |
4.10% unsecured notes due 2048 |  |  |
Schedule Of Debt Instruments [Line Items] |  |  |
Unsecured notes, interest rate | 4.10% |  | 4.10%
Unsecured notes. noncurrent | $ 400.0 | $ 400.0 |

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