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Fair Value of Financial Assets - Schedule of Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Millions	May. 30, 2015	May. 31, 2014
Gain (Loss) on Investments
Cost	$ 5.7	$ 11.1
Unrealized Gain	0.0	0.0
Unrealized Loss	0.0	0.0
Market Value	5.7	11.1
Asset-Backed Securities
Gain (Loss) on Investments
Cost	0.2	0.4
Unrealized Gain	0.0	0.0
Unrealized Loss	0.0	0.0
Market Value	0.2	0.4
Corporate Debt Securities
Gain (Loss) on Investments
Cost	0.6	1.2
Unrealized Gain	0.0	0.0
Unrealized Loss	0.0	0.0
Market Value	0.6	1.2
Government Obligations
Gain (Loss) on Investments
Cost	0.5	7.9
Unrealized Gain	0.0	0.0
Unrealized Loss	0.0	0.0
Market Value	0.5	7.9
Mortgage-Backed Securities
Gain (Loss) on Investments
Cost	4.4	1.6
Unrealized Gain	0.0	0.0
Unrealized Loss	0.0	0.0
Market Value	$ 4.4	$ 1.6

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This item represents the gross unrealized gains of debt and equity securities, derivatives, and long-term debt.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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



-Publisher FASB



-Name Accounting Standards Codification



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-Paragraph 1



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Amount of investments in debt securities classified as available-for-sale, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 320



-SubTopic 10



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