Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
Nov. 29, 2014	May 31, 2014
Schedule of Warranty Accrual
Warranty Length	12 years
Performance Guarantee
Schedule of Warranty Accrual
Guarantor Obligations, Maximum Exposure, Undiscounted	10.4
Guarantor Obligations, Current Carrying Value	0	0
Financial Standby Letter of Credit
Schedule of Warranty Accrual
Guarantor Obligations, Maximum Exposure, Undiscounted	10.6
Guarantor Obligations, Current Carrying Value	0	0
Minimum \| Performance Guarantee
Schedule of Warranty Accrual
Guarantor Obligations, Period	1 year
Maximum \| Performance Guarantee
Schedule of Warranty Accrual
Guarantor Obligations, Period	3 years
Necessary Maintenance And Repairs
Schedule of Warranty Accrual
Loss Contingency, Range of Possible Loss, Minimum	0
Loss Contingency, Range of Possible Loss, Maximum	3.0
Other Accrued Liabilities \| Necessary Maintenance And Repairs
Schedule of Warranty Accrual
Loss Contingency Accrual	1.2	$ 1.5

Guarantor Obligations, Period

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- Definition

Warranty Length

+ References

No definition available.

+ Details

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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- Definition

Amount of loss contingency liability.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

The estimated maximum amount of possible loss from the contingency.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

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Period Type:	instant

- Definition

The estimated minimum amount of possible loss from the contingency.

+ References

+ Details

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