Commitments and Contingencies Unconditional Purchase Obligations (Details) - Minimum [Member] $ in Thousands	May. 31, 2015 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligation	$ 912,183
Unrecorded Unconditional Purchase Obligation, Long-Term, Discounted	729,900
Unrecorded Unconditional Purchase Obligation, Long-Term, Due in Next Twelve Months	79,751
Unrecorded Unconditional Purchase Obligation, Long-Term, Due Within Two to Three Years	129,020
Unrecorded Unconditional Purchase Obligation, Long-Term, Due Within Four to Five Years	114,110
Unrecorded Unconditional Purchase Obligation, Long-Term, Due after Five Years	$ 589,302

Minimum future payments required under long-term unconditional purchase obligations, discounted to present value.

No definition available.

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- Definition

Unrecorded Unconditional Purchase Obligation, Long-Term, Due Within Four to Five Years

+ References

No definition available.

+ Details

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- Definition

Unrecorded Unconditional Purchase Obligation, Long-Term, Due Within Two to Three Years

+ References

No definition available.

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

+ Details

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Period Type:	instant

- Definition

Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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