Borrowings and Credit Arrangements - Company's Borrowings (Detail) - USD ($) $ in Millions	Apr. 01, 2017	Sep. 24, 2016
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	$ 1,049.4	$ 296.0
Convertible Notes	782.8	12.2
Convertible Notes	0.0	763.5
Total long-term debt obligations	2,233.8	3,049.4
Total debt obligations	3,283.2	3,345.4
Term Loan [Member]
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	102.6	83.8
Long-term debt obligations, net of debt discount	1,254.1	1,308.2
Accounts Receivable Securitization [Member]
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	164.0	200.0
2022 Notes [Member]
Debt Instrument [Line Items]
Long-term debt obligations, net of debt discount	$ 979.7	$ 977.7

Long term debt obligations without convertible notes.

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Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

+ References

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-Publisher FASB
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Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

+ References

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

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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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