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Employee Benefit Plans - Schedule of Fair Value and Allocation of Plan Assets (Details) (USD $) In Millions, unless otherwise specified |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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May 31, 2014 US & International Equity Securities Level 1 | Jun. 01, 2013 US & International Equity Securities Level 1 | May 31, 2014 US & International Equity Securities Level 2 | Jun. 01, 2013 US & International Equity Securities Level 2 | May 31, 2014 US & International Equity Securities Estimate of Fair Value Measurement | Jun. 01, 2013 US & International Equity Securities Estimate of Fair Value Measurement | May 31, 2014 Domestic | Jun. 01, 2013 Domestic | Jun. 02, 2012 Domestic | May 31, 2014 Domestic Level 1 | Jun. 01, 2013 Domestic Level 1 | May 31, 2014 Domestic Level 2 | Jun. 01, 2013 Domestic Level 2 | May 31, 2014 Domestic Estimate of Fair Value Measurement | Jun. 01, 2013 Domestic Estimate of Fair Value Measurement | May 31, 2014 Domestic Equities | Jun. 01, 2013 Domestic Equities | May 31, 2014 Domestic Fixed Income | Jun. 01, 2013 Domestic Fixed Income | May 31, 2014 Domestic Other And Common Collective Trusts | Jun. 01, 2013 Domestic Other And Common Collective Trusts | May 31, 2014 Domestic Cash And Cash Equivalents Level 1 | Jun. 01, 2013 Domestic Cash And Cash Equivalents Level 1 | May 31, 2014 Domestic Cash And Cash Equivalents Level 2 | Jun. 01, 2013 Domestic Cash And Cash Equivalents Level 2 | May 31, 2014 Domestic Cash And Cash Equivalents Estimate of Fair Value Measurement | Jun. 01, 2013 Domestic Cash And Cash Equivalents Estimate of Fair Value Measurement | May 31, 2014 Domestic Debt Securities - Corporate Level 1 | Jun. 01, 2013 Domestic Debt Securities - Corporate Level 1 | May 31, 2014 Domestic Debt Securities - Corporate Level 2 | Jun. 01, 2013 Domestic Debt Securities - Corporate Level 2 | May 31, 2014 Domestic Debt Securities - Corporate Estimate of Fair Value Measurement | Jun. 01, 2013 Domestic Debt Securities - Corporate Estimate of Fair Value Measurement | May 31, 2014 Domestic Common Collective Trusts - Equities Level 1 | Jun. 01, 2013 Domestic Common Collective Trusts - Equities Level 1 | May 31, 2014 Domestic Common Collective Trusts - Equities Level 2 | Jun. 01, 2013 Domestic Common Collective Trusts - Equities Level 2 | May 31, 2014 Domestic Common Collective Trusts - Equities Estimate of Fair Value Measurement | Jun. 01, 2013 Domestic Common Collective Trusts - Equities Estimate of Fair Value Measurement | May 31, 2014 Domestic Common Collective Trusts - Fixed Income Level 1 | Jun. 01, 2013 Domestic Common Collective Trusts - Fixed Income Level 1 | May 31, 2014 Domestic Common Collective Trusts - Fixed Income Level 2 | Jun. 01, 2013 Domestic Common Collective Trusts - Fixed Income Level 2 | May 31, 2014 Domestic Common Collective Trusts - Fixed Income Estimate of Fair Value Measurement | Jun. 01, 2013 Domestic Common Collective Trusts - Fixed Income Estimate of Fair Value Measurement | May 31, 2014 International | Jun. 01, 2013 International | Jun. 02, 2012 International | May 31, 2014 International Level 1 | Jun. 01, 2013 International Level 1 | May 31, 2014 International Level 2 | Jun. 01, 2013 International Level 2 | May 31, 2014 International Estimate of Fair Value Measurement | Jun. 01, 2013 International Estimate of Fair Value Measurement | May 31, 2014 International Equities | Jun. 01, 2013 International Equities | May 31, 2014 International Fixed Income | Jun. 01, 2013 International Fixed Income | May 31, 2014 International Other And Common Collective Trusts | Jun. 01, 2013 International Other And Common Collective Trusts | May 31, 2014 International Cash And Cash Equivalents Level 1 | Jun. 01, 2013 International Cash And Cash Equivalents Level 1 | May 31, 2014 International Cash And Cash Equivalents Level 2 | Jun. 01, 2013 International Cash And Cash Equivalents Level 2 | May 31, 2014 International Cash And Cash Equivalents Estimate of Fair Value Measurement | Jun. 01, 2013 International Cash And Cash Equivalents Estimate of Fair Value Measurement | May 31, 2014 International Foreign Government Obligations Level 1 | Jun. 01, 2013 International Foreign Government Obligations Level 1 | May 31, 2014 International Foreign Government Obligations Level 2 | Jun. 01, 2013 International Foreign Government Obligations Level 2 | May 31, 2014 International Foreign Government Obligations Estimate of Fair Value Measurement | Jun. 01, 2013 International Foreign Government Obligations Estimate of Fair Value Measurement | May 31, 2014 International Common Collective Trusts - Balanced Level 1 | Jun. 01, 2013 International Common Collective Trusts - Balanced Level 1 | May 31, 2014 International Common Collective Trusts - Balanced Level 2 | Jun. 01, 2013 International Common Collective Trusts - Balanced Level 2 | May 31, 2014 International Common Collective Trusts - Balanced Estimate of Fair Value Measurement | Jun. 01, 2013 International Common Collective Trusts - Balanced Estimate of Fair Value Measurement
Defined Benefit Plan Disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Targeted Asset Allocation Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  | 0.00% |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  | 20.00% |  | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Plan Assets at Year End |  |  |  |  |  |  | 0.00% | 100.00% |  |  |  |  |  |  |  | 0.00% | 10.00% | 0.00% | 86.00% | 0.00% | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 100.00% |  |  |  |  |  |  |  | 0.00% | 0.00% | 26.00% | 26.00% | 74.00% | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | $ 0 | $ 2.2 | $ 0 | $ 0 | $ 0 | $ 2.2 | $ 0 | $ 290.0 | $ 316.9 | $ 0 | $ 22.3 | $ 0 | $ 267.7 | $ 0 | $ 290.0 |  |  |  |  |  |  | $ 0 | $ 12.5 | $ 0 | $ 0 | $ 0 | $ 12.5 | $ 0 | $ 7.6 | $ 0 | $ 0 | $ 0 | $ 7.6 | $ 0 | $ 0 | $ 0 | $ 26.5 | $ 0 | $ 26.5 | $ 0 | $ 0 | $ 0 | $ 241.2 | $ 0 | $ 241.2 | $ 94.8 | $ 84.2 | $ 72.6 | $ 0.2 | $ 0.2 | $ 94.6 | $ 84.0 | $ 94.8 | $ 84.2 |  |  |  |  |  |  | $ 0.2 | $ 0.2 | $ 0 | $ 0 | $ 0.2 | $ 0.2 | $ 0 | $ 0 | $ 24.5 | $ 22.0 | $ 24.5 | $ 22.0 | $ 0 | $ 0 | $ 70.1 | $ 62.0 | $ 70.1 | $ 62.0

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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