Debt (Schedule of Long term debt and Capital lease obligation) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 25, 2015
Current maturities of long-term debt:
Long-term Debt, Current Maturities	$ 257.1	$ 22.0
Debt Issuance Costs, Current, Net	0.8	0.0
Capital lease obligation and vendor financing agreements	1.0	1.0
Variable rate receivable securitization	0.0	153.0
Long-term debt:
Long-term Debt, Gross	5,878.5	6,584.2
Capital Lease Obligations, Noncurrent	0.2	1.0
Debt, Long-term and Short-term, Combined Amount	6,135.6	6,606.2
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	90.6	109.9
Variable rate receivable securitization
Current maturities of long-term debt:
Long-term Debt, Current Maturities	235.0	0.0
Debt Issuance Costs, Current, Net	0.4	0.0
Long-term debt:
Debt Issuance Costs, Net	0.0	0.8
Capital Lease Obligations [Member]
Current maturities of long-term debt:
Debt Issuance Costs, Current, Net	0.0	0.0
Long-term Debt [Member]
Long-term debt:
Debt Issuance Costs, Net	89.8	109.9
Senior Notes \| 3.50% notes due April 2018
Long-term debt:
Long-term Debt, Gross	300.0	300.0
Debt Issuance Costs, Net	1.1	1.7
Senior Notes \| 4.75% notes due April 2023
Long-term debt:
Long-term Debt, Gross	600.0	600.0
Debt Issuance Costs, Net	6.4	7.1
Senior Notes \| 5.75% notes due August 2022
Long-term debt:
Long-term Debt, Gross	884.0	900.0
Debt Issuance Costs, Net	12.1	14.4
Debentures \| Four Point Eight Eight Percent Notes [Member]
Long-term debt:
Long-term Debt, Gross	700.0	700.0
Debt Issuance Costs, Net	8.8	11.3
Debentures \| 5.625% notes due October 2023
Long-term debt:
Long-term Debt, Gross	740.0	750.0
Debt Issuance Costs, Net	11.8	13.7
Debentures \| Five Point Five Percent Notes [Member]
Long-term debt:
Long-term Debt, Gross	700.0	700.0
Debt Issuance Costs, Net	10.6	11.9
Debentures \| 2015 Revolving Credit Facility
Long-term debt:
Long-term Debt, Gross	0.0	500.0
Debt Issuance Costs, Net	3.6	4.9
Secured Debt \| Term loans due March 2021
Current maturities of long-term debt:
Long-term Debt, Current Maturities	20.0	20.0
Debt Issuance Costs, Current, Net	0.4	0.0
Long-term debt:
Long-term Debt, Gross	1,933.5	1,958.5
Debt Issuance Costs, Net	35.4	44.1
Secured Debt \| 4.00% term loan due February 2022
Current maturities of long-term debt:
Long-term Debt, Current Maturities	1.1	1.0
Debt Issuance Costs, Current, Net	0.0	0.0
Long-term debt:
Long-term Debt, Gross	6.0	6.9
Debt Issuance Costs, Net	0.0	0.0
Secured Debt \| Variable rate receivable securitization
Current maturities of long-term debt:
Variable rate receivable securitization	235.0
Debentures \| 8.00% debentures due March 2023
Long-term debt:
Long-term Debt, Gross	4.4	4.4
Debt Issuance Costs, Net	0.0	0.0
Debentures \| 9.50% debentures due May 2022
Long-term debt:
Long-term Debt, Gross	10.4	10.4
Debt Issuance Costs, Net	0.0	0.0
Capital Lease Obligations [Member]
Long-term debt:
Debt Issuance Costs, Net	$ 0.0	$ 0.0

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- Definition

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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- Definition

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 of unamortized debt discount (premium) and debt issuance costs.

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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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