Debt (Schedule Of Debt) (Detail) - USD ($) $ in Millions	Jul. 03, 2020	Jan. 03, 2020
Debt Instrument [Line Items]
Unamortized discount and issuance costs	$ (10.5)	$ (10.8)
Total debt	1,832.7	1,843.2
Less: Short-term debt	268.2	219.0
Long-term debt	$ 1,564.5	1,624.2
Uncommitted Facilities, floating rate
Debt Instrument [Line Items]
Effective interest rate	1.26%
Debt, gross	$ 268.0	218.7
Promissory notes and other debt
Debt Instrument [Line Items]
Debt, gross	$ 0.2	0.3
2023 Senior Notes, 4.15%, due June 2023 \| Senior Notes
Debt Instrument [Line Items]
Effective interest rate	4.36%
Debt, gross	$ 300.0	300.0
Fixed rate	4.15%
2028 Senior Notes, 4.90%, due June 2028 \| Senior Notes
Debt Instrument [Line Items]
Effective interest rate	5.04%
Debt, gross	$ 600.0	600.0
Fixed rate	4.90%
2024 Senior Notes, 4.75%, due December 2024 \| Senior Notes
Debt Instrument [Line Items]
Effective interest rate	4.95%
Debt, gross	$ 400.0	400.0
Fixed rate	4.75%
Revolving Credit Facility, due May 2023 \| Revolving Credit Facility
Debt Instrument [Line Items]
Effective interest rate	1.99%
Debt, gross	$ 50.0	110.0
Term Loan, due July 2022 \| Term Loan, due July 2022 \| Revolving Credit Facility
Debt Instrument [Line Items]
Effective interest rate	3.34%
Debt, gross	$ 225.0	$ 225.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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