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

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Gross amount of debt extinguished.

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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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Long-Term Debt (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
Long-Term Debt (Details) - USD ($) $ in Millions	Feb. 28, 2016	Feb. 22, 2015	Feb. 28, 2016	Feb. 28, 2016	Feb. 22, 2015	May. 29, 2016	May. 31, 2015
Debt Instrument [Line Items]
Current portion of long-term debt	$ 447.7		$ 447.7	$ 447.7			$ 1,470.0
Extinguishment of debt, amount	1,010.0		$ 1,010.0
Loss on extinguishment of debt	71.3	$ 0.8		106.8	$ 91.3
Expense (benefit) for cash components for repurchase premiums and make-whole amountsnguishment costs				(68.7)	44.0
Non-cash charges on extinguishment of debt				$ 38.1	$ 47.3
Long-term Debt \| Variable Rate Term Loan Due August 2017
Debt Instrument [Line Items]
Extinguishment of debt, amount	262.0
Senior Notes \| 6.200% Senior Notes Due October 2017
Debt Instrument [Line Items]
Extinguishment of debt, amount	$ 500.0
Interest rate of debt	6.20%		6.20%	6.20%
Senior Notes \| 4.500% Senior Notes Due October 2021
Debt Instrument [Line Items]
Extinguishment of debt, amount	$ 121.9
Interest rate of debt	4.50%		4.50%	4.50%
Senior Notes \| 3.350% Senior Note due November 2022
Debt Instrument [Line Items]
Extinguishment of debt, amount	$ 111.1
Interest rate of debt	3.35%		3.35%	3.35%
Senior Notes \| 4.520% Senior Notes Due August 2024
Debt Instrument [Line Items]
Extinguishment of debt, amount	$ 10.0
Interest rate of debt	4.52%		4.52%	4.52%
Senior Notes \| 6.000% Senior Notes Due In August 2035
Debt Instrument [Line Items]
Current portion of long-term debt	$ 150.0		$ 150.0	$ 150.0
Interest rate of debt	6.00%		6.00%	6.00%
Senior Notes \| 6.800% Senior Notes Due In October 2037
Debt Instrument [Line Items]
Current portion of long-term debt	$ 300.0		$ 300.0	$ 300.0
Interest rate of debt	6.80%		6.80%	6.80%
Scenario, Forecast \| Variable Rate Term Loan
Debt Instrument [Line Items]
Current portion of long-term debt						$ 8.0