Long-Term Debt (Components Of Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
May 25, 2014	May 26, 2013
Debt Instruments [Line Items]
Total long-term debt	$ 2,500.0	$ 2,500.0
Fair value hedge	1.6	1.9
Less issuance discount	(5.2)	(5.7)
Total long-term debt less issuance discount	2,496.4	2,496.2
Less current portion	(15.0)	0
Long-term debt, excluding current portion	2,481.4	2,496.2
7.125% debentures due February 2016
Debt Instruments [Line Items]
Total long-term debt	100.0	100.0
Debt instrument, interest rate, stated percentage (percentage)	7.125%
Maturity date of debt	Feb. 29, 2016
Variable-rate term loan (1.65% at May 25, 2014) due August 2017
Debt Instruments [Line Items]
Total long-term debt	300.0	300.0
Debt instrument, interest rate, stated percentage (percentage)	1.65%
Maturity date of debt	Aug. 31, 2017
6.200% senior notes due October 2017
Debt Instruments [Line Items]
Total long-term debt	500.0	500.0
Debt instrument, interest rate, stated percentage (percentage)	6.20%
Maturity date of debt	Oct. 31, 2017
3.790% senior notes due August 2019
Debt Instruments [Line Items]
Total long-term debt	80.0	80.0
Debt instrument, interest rate, stated percentage (percentage)	3.79%
Maturity date of debt	Aug. 31, 2019
4.500% senior notes due October 2021
Debt Instruments [Line Items]
Total long-term debt	400.0	400.0
Debt instrument, interest rate, stated percentage (percentage)	4.50%
Maturity date of debt	Oct. 31, 2021
3.350% senior notes due November 2022
Debt Instruments [Line Items]
Total long-term debt	450.0	450.0
Debt instrument, interest rate, stated percentage (percentage)	3.35%
Maturity date of debt	Nov. 30, 2022
4.520% senior notes due August 2024
Debt Instruments [Line Items]
Total long-term debt	220.0	220.0
Debt instrument, interest rate, stated percentage (percentage)	4.52%
Maturity date of debt	Aug. 31, 2024
6.000% senior notes due August 2035
Debt Instruments [Line Items]
Total long-term debt	150.0	150.0
Debt instrument, interest rate, stated percentage (percentage)	6.00%
Maturity date of debt	Aug. 31, 2035
6.800% senior notes due October 2037
Debt Instruments [Line Items]
Total long-term debt	$ 300.0	$ 300.0
Debt instrument, interest rate, stated percentage (percentage)	6.80%
Maturity date of debt	Oct. 31, 2037

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Fair value as of the balance sheet date of all derivative liabilities designated as interest rate fair value hedging instruments.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, after unamortized discount or premium, scheduled 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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