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Other Intangible Assets Major Classes (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
May. 31, 2015 | May. 31, 2014
Intangible Assets by Major Class [Line Items] |  |
Total Other Intangible Assets gross carrying amount | $ 866,632 | $ 710,380
Amortized intangible assets, gross carrying amount | 635,362 | 518,863
Amortized intangible assets, accumulated amortization | 262,502 | 250,844
Amortized intangible assets, net other intangible assets | 372,860 | 268,019
Total Other Intangible Assets, net | 604,130 | 459,536
Tradenames and Trademarks |  |
Intangible Assets by Major Class [Line Items] |  |
Indefinite-lived intangible assets, net other intangible assets | 231,270 | 191,517
Formulae |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | 229,721 | 226,200
Amortized intangible assets, accumulated amortization | 131,031 | 124,413
Amortized intangible assets, net other intangible assets | $ 98,690 | $ 101,787
Formulae | Minimum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 3 years | 3 years
Formulae | Maximum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 33 years | 33 years
Customer-Related Intangible Assets |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | $ 324,867 | $ 201,968
Amortized intangible assets, accumulated amortization | 91,104 | 80,667
Amortized intangible assets, net other intangible assets | $ 233,763 | $ 121,301
Customer-Related Intangible Assets | Minimum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 3 years | 3 years
Customer-Related Intangible Assets | Maximum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 33 years | 33 years
Tradenames and Trademarks |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | $ 33,985 | $ 33,219
Amortized intangible assets, accumulated amortization | 14,550 | 15,435
Amortized intangible assets, net other intangible assets | $ 19,435 | $ 17,784
Tradenames and Trademarks | Minimum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 3 years | 3 years
Tradenames and Trademarks | Maximum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 40 years | 40 years
Other Intangible Assets |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | $ 46,789 | $ 57,476
Amortized intangible assets, accumulated amortization | 25,817 | 30,329
Amortized intangible assets, net other intangible assets | $ 20,972 | $ 27,147
Other Intangible Assets | Minimum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 2 years | 2 years
Other Intangible Assets | Maximum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 40 years | 40 years

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