Guarantor and Non-Guarantor Financial Statements - Condensed Consolidating Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	Nov. 30, 2014	May 31, 2014	Nov. 30, 2013	May 31, 2013
Current assets:
Cash and cash equivalents	$ 276.5	$ 247.6	$ 176.2	$ 355.6
Accounts receivable, net	565.3us-gaap_AccountsReceivableNetCurrent	577.3us-gaap_AccountsReceivableNetCurrent
Inventories, net	721.7us-gaap_InventoryNet	693.4us-gaap_InventoryNet
Deferred income taxes	147.0us-gaap_DeferredTaxAssetsNetCurrent	149.9us-gaap_DeferredTaxAssetsNetCurrent
Prepaid expenses and other	187.7	202.9
Total current assets	1,898.2us-gaap_AssetsCurrent	1,871.1us-gaap_AssetsCurrent
Property, plant and equipment, net	720.0us-gaap_PropertyPlantAndEquipmentNet	716.0us-gaap_PropertyPlantAndEquipmentNet
Investments	13.5us-gaap_LongTermInvestments	12.5us-gaap_LongTermInvestments
Intangible assets, net	3,218.6	3,439.6
Goodwill	3,577.1us-gaap_Goodwill	3,634.4us-gaap_Goodwill
Other assets	130.7us-gaap_OtherAssetsNoncurrent	93.0us-gaap_OtherAssetsNoncurrent
Total assets	9,558.1us-gaap_Assets	9,766.6us-gaap_Assets
Current liabilities:
Current portion of long-term debt	132.8us-gaap_LongTermDebtCurrent	133.1us-gaap_LongTermDebtCurrent
Accounts payable	102.1us-gaap_AccountsPayableCurrent	135.3us-gaap_AccountsPayableCurrent
Accrued interest	50.7us-gaap_AccruedLiabilitiesCurrent	53.4us-gaap_AccruedLiabilitiesCurrent
Accrued wages and commissions	123.4	168.7
Other accrued expenses	353.6us-gaap_OtherAccruedLiabilitiesCurrent	354.7us-gaap_OtherAccruedLiabilitiesCurrent
Total current liabilities	762.6us-gaap_LiabilitiesCurrent	845.2us-gaap_LiabilitiesCurrent
Long-term debt	5,581.9us-gaap_LongTermDebtNoncurrent	5,587.3us-gaap_LongTermDebtNoncurrent
Deferred income taxes	920.3	968.6
Other long-term liabilities	259.4us-gaap_OtherLiabilitiesNoncurrent	256.3us-gaap_OtherLiabilitiesNoncurrent
Total liabilities	7,524.2us-gaap_Liabilities	7,657.4us-gaap_Liabilities
Shareholder’s equity	2,033.9us-gaap_StockholdersEquity	2,109.2us-gaap_StockholdersEquity
Total liabilities and shareholders’ equity	9,558.1	9,766.6
Biomet, Inc [Member]
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Deferred income taxes	0	0
Prepaid expenses and other	0	0
Total current assets	0	0
Property, plant and equipment, net	0	0
Investments	0	0
Investment in subsidiaries	7,799.2	7,882.9
Intangible assets, net	0	0
Goodwill	0	0
Other assets	0	0
Total assets	7,799.2	7,882.9
Current liabilities:
Current portion of long-term debt	132.8	133.1
Accounts payable	0	0
Accrued interest	50.6	53.3
Accrued wages and commissions	0	0
Other accrued expenses	0	0
Total current liabilities	183.4	186.4
Long-term debt	5,581.9	5,587.3
Deferred income taxes	0	0
Other long-term liabilities	0	0
Total liabilities	5,765.3	5,773.7
Shareholder’s equity	2,033.9	2,109.2
Total liabilities and shareholders’ equity	7,799.2	7,882.9
Guarantor [Member]
Current assets:
Cash and cash equivalents	88.1	101.8	110.0	35.3
Accounts receivable, net	290.3	284.6
Inventories, net	404.9	374.3
Deferred income taxes	118.2	117.9
Prepaid expenses and other	135.9	128.0
Total current assets	1,037.4	1,006.6
Property, plant and equipment, net	430.8	412.4
Investments	12.9	11.9
Investment in subsidiaries	0	0
Intangible assets, net	2,610.8	2,740.1
Goodwill	3,143.5	3,146.7
Other assets	119.9	81.5
Total assets	7,355.3	7,399.2
Current liabilities:
Current portion of long-term debt	0	0
Accounts payable	60.5	86.9
Accrued interest	0	0
Accrued wages and commissions	67.3	90.0
Other accrued expenses	282.7	259.4
Total current liabilities	410.5	436.3
Long-term debt	0	0
Deferred income taxes	765.9	811.3
Other long-term liabilities	172.8	170.8
Total liabilities	1,349.2	1,418.4
Shareholder’s equity	6,006.1	5,980.8
Total liabilities and shareholders’ equity	7,355.3	7,399.2
Non-Guarantors [Member]
Current assets:
Cash and cash equivalents	188.4	145.8	66.2	320.3
Accounts receivable, net	275.0	292.7
Inventories, net	316.8	319.1
Deferred income taxes	28.8	32.0
Prepaid expenses and other	51.8	74.9
Total current assets	860.8	864.5
Property, plant and equipment, net	289.2	303.6
Investments	0.6	0.6
Investment in subsidiaries	0	0
Intangible assets, net	607.8	699.5
Goodwill	433.6	487.7
Other assets	10.8	11.5
Total assets	2,202.8	2,367.4
Current liabilities:
Current portion of long-term debt	0	0
Accounts payable	41.6	48.4
Accrued interest	0.1	0.1
Accrued wages and commissions	56.1	78.7
Other accrued expenses	70.9	95.3
Total current liabilities	168.7	222.5
Long-term debt	0	0
Deferred income taxes	154.4	157.3
Other long-term liabilities	86.6	85.5
Total liabilities	409.7	465.3
Shareholder’s equity	1,793.1	1,902.1
Total liabilities and shareholders’ equity	2,202.8	2,367.4
Eliminations [Member]
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Deferred income taxes	0	0
Prepaid expenses and other	0	0
Total current assets	0	0
Property, plant and equipment, net	0	0
Investments	0	0
Investment in subsidiaries	(7,799.2)	(7,882.9)
Intangible assets, net	0	0
Goodwill	0	0
Other assets	0	0
Total assets	(7,799.2)	(7,882.9)
Current liabilities:
Current portion of long-term debt	0	0
Accounts payable	0	0
Accrued interest	0	0
Accrued wages and commissions	0	0
Other accrued expenses	0	0
Total current liabilities	0	0
Long-term debt	0	0
Deferred income taxes	0	0
Other long-term liabilities	0	0
Total liabilities	0	0
Shareholder’s equity	(7,799.2)	(7,882.9)
Total liabilities and shareholders’ equity	(7,799.2)	(7,882.9)
Biomet, Inc. [Member]
Current assets:
Cash and cash equivalents	276.5	247.6	176.2	355.6
Accounts receivable, net	565.3	577.3
Inventories, net	721.7	693.4
Deferred income taxes	147.0	149.9
Prepaid expenses and other	187.7	202.9
Total current assets	1,898.2	1,871.1
Property, plant and equipment, net	720.0	716.0
Investments	13.5	12.5
Investment in subsidiaries	0	0
Intangible assets, net	3,218.6	3,439.6
Goodwill	3,577.1	3,634.4
Other assets	130.7	93.0
Total assets	9,558.1	9,766.6
Current liabilities:
Current portion of long-term debt	132.8	133.1
Accounts payable	102.1	135.3
Accrued interest	50.7	53.4
Accrued wages and commissions	123.4	168.7
Other accrued expenses	353.6	354.7
Total current liabilities	762.6	845.2
Long-term debt	5,581.9	5,587.3
Deferred income taxes	920.3	968.6
Other long-term liabilities	259.4	256.3
Total liabilities	7,524.2	7,657.4
Shareholder’s equity	2,033.9	2,109.2
Total liabilities and shareholders’ equity	$ 9,558.1	$ 9,766.6

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