Net Deferred Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current deferred income taxes:
Inventories	$ 9,034us-gaap_DeferredTaxAssetsInventory	$ 6,306us-gaap_DeferredTaxAssetsInventory
Accrued expenses	104,279pii_DeferredTaxAssetsAccruedExpenses	87,157pii_DeferredTaxAssetsAccruedExpenses
Derivative instruments	864	(107)
Total current	114,177us-gaap_DeferredTaxAssetsNetCurrent	93,356us-gaap_DeferredTaxAssetsNetCurrent
Noncurrent deferred income taxes:
Cost in excess of net assets of business acquired	(13,111)	(13,594)
Property and equipment	(28,921)	(36,069)
Compensation payable in common stock	58,446	42,528
Net operating loss carryforwards and impairments	12,693	5,782
Valuation allowance	(6,097)	(5,059)
Total noncurrent	23,010	(6,412)
Total net deferred income tax asset	$ 137,187us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 86,944us-gaap_DeferredTaxAssetsLiabilitiesNet

Deferred Tax Assets, Accrued Expenses

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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