Borrowings and Credit Arrangements - Company's Borrowings (Detail) - USD ($) $ in Millions	Sep. 29, 2018	Sep. 30, 2017
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	$ 599.7	$ 1,150.8
Convertible Notes	0.0	484.5
Total long-term debt obligations	2,704.6	2,172.1
Total debt obligations	3,304.3	3,322.9
Term Loan
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	74.7	121.3
Long-term debt obligations, net of debt discount	1,376.3	1,190.5
Revolver
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	300.0	345.0
Securitization Program
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	225.0	200.0
2022 Senior Notes
Debt Instrument [Line Items]
Long-term debt obligations, net of debt discount	0.0	981.6
2025 Senior Notes
Debt Instrument [Line Items]
Long-term debt obligations, net of debt discount	935.2	0.0
2028 Senior Notes
Debt Instrument [Line Items]
Long-term debt obligations, net of debt discount	$ 393.1	$ 0.0

Long term debt obligations without convertible notes.

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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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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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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.

+ 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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.

+ References

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