Discontinued Operations and Divestitures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Feb. 26, 2012	Feb. 27, 2011	Feb. 26, 2012	Feb. 27, 2011
Comparative financial results of the discontinued operations
Net sales		$ 13.4	$ 0.5	$ 81.0
Long-lived asset impairment charge		(16.3)		(16.3)
Income (loss) from operations of discontinued operations before income taxes		(16.4)	0.1	(11.8)
Net gain (loss) from disposal of businesses		(0.2)		0.2
Income (loss) before income taxes		(16.6)	0.1	(11.6)
Income tax benefit		6.0		4.6
Income (loss) from discontinued operations, net of tax		$ (10.6)	$ 0.1	$ (7.0)

Pretax gain (loss), not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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