Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Nov. 23, 2014	Nov. 24, 2013	Nov. 23, 2014	Nov. 24, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ (32.8)us-gaap_NetIncomeLoss	$ 19.8us-gaap_NetIncomeLoss	$ 470.4us-gaap_NetIncomeLoss	$ 90.0us-gaap_NetIncomeLoss
Other comprehensive income (loss):
Foreign currency adjustment	4.0	(0.9)	5.5	(1.9)
Change in fair value of marketable securities, net of taxes of $0.0, $0.0, $0.0 and $(0.1), respectively	0.1	0	0	(0.1)
Change in fair value of derivatives and amortization of unrecognized gains and losses on derivatives, net of taxes of $0.5, $3.1, $15.9 and $2.1, respectively	3.5	5.8	27.4	3.7
Net unamortized gain arising during period, including amortization of unrecognized net actuarial loss, net of taxes of $9.3, $1.0, $9.8, and $2.0, respectively	15.1	1.6	15.4	3.2
Other comprehensive income (loss)	22.7	6.5	48.3	4.9
Total comprehensive (loss) income	$ (10.1)	$ 26.3	$ 518.7	$ 94.9

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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