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Short-term and Long-term Debt - Summary of Debt (Detail) - USD ($) $ in Millions | Sep. 29, 2018 | Dec. 30, 2017
--- | --- | ---
Schedule Of Debt Instruments [Line Items] |  |
Current unsecured notes | $ 0.0 | $ 250.0
Other debt | 159.3 | 186.8
Long-term debt including current maturities | 1,109.3 | 1,186.8
Less: notes payable and current maturities of long-term debt: |  |
Current maturities of long-term debt | 0.0 | (250.0)
Commercial paper borrowings | (154.0) | (151.0)
Other notes | (10.5) | (32.2)
Notes payable and current maturities of long-term debt | (164.5) | (433.2)
Long-term debt | 944.8 | 753.6
4.25% unsecured notes due 2018 |  |
Schedule Of Debt Instruments [Line Items] |  |
Current unsecured notes | 0.0 | 250.0
Less: notes payable and current maturities of long-term debt: |  |
Current maturities of long-term debt | 0.0 | (250.0)
6.70% unsecured notes due 2019 |  |
Schedule Of Debt Instruments [Line Items] |  |
Noncurrent unsecured notes | 0.0 | 200.0
6.125% unsecured notes due 2021 |  |
Schedule Of Debt Instruments [Line Items] |  |
Noncurrent unsecured notes | 250.0 | 250.0
3.25% unsecured notes due 2027 |  |
Schedule Of Debt Instruments [Line Items] |  |
Noncurrent unsecured notes | 300.0 | 300.0
4.10% unsecured notes due 2048 |  |
Schedule Of Debt Instruments [Line Items] |  |
Noncurrent unsecured notes | $ 400.0 | $ 0.0

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