Debt (Details) - USD ($) $ in Millions	Dec. 29, 2018	Mar. 31, 2018
Debt Instrument [Line Items]
Borrowings outstanding under credit facilities	$ 0.0	$ 10.1
Total debt	686.8	596.2
Short-term debt and current portion of long-term debt	0.0	308.2
Long-term debt	686.8	288.0
2.125% Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes	0.0	298.1
Cumulative amount of fair value hedging adjustment included in carrying value of hedged item		(1.6)
Unamortized Debt Issuance Costs		(0.3)
2.625% Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes	291.2	288.0
Cumulative amount of fair value hedging adjustment included in carrying value of hedged item	(8.0)	(10.8)
Unamortized Debt Issuance Costs	(0.8)	(1.2)
3.750% Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes	395.6	$ 0.0
Unamortized Debt Issuance Costs	$ (4.4)

Short-term debt and current portion of long-term debt

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

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- Definition

Fair value of all derivatives designated as interest rate fair value hedging instruments.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 5
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- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-SubTopic 210
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- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

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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Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

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