Financing Agreements Financing Agreements - Schedule of borrowings (Details) - USD ($) |
Sep. 30, 2019 |
Sep. 25, 2019 |
Sep. 30, 2018 |
Jul. 09, 2010 |
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| Debt Instrument [Line Items] | ||||
| Long-term Debt | $ 619,500,000 | $ 344,600,000 | ||
| Current portion of long-term debt | 0 | 0 | ||
| Long-term debt | 619,500,000 | 344,600,000 | ||
| 2010 Notes | ||||
| Debt Instrument [Line Items] | ||||
| Long-term Debt | 370,100,000 | $ 374,400,000 | 0 | |
| $150 senior unsecured notes | ||||
| Debt Instrument [Line Items] | ||||
| Long-term Debt | 149,700,000 | 149,300,000 | $ 148,400,000 | |
| $100 Series A Notes (3) | ||||
| Debt Instrument [Line Items] | ||||
| Long-term Debt | 99,700,000 | 99,600,000 | ||
| Line of Credit [Member] | ||||
| Debt Instrument [Line Items] | ||||
| Long-term Debt | $ 0 | $ 95,700,000 |
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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. No definition available.
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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