Accrued Expenses - Schedule of Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Accrued bonuses	$ 7,677us-gaap_AccruedBonusesCurrent	$ 7,912us-gaap_AccruedBonusesCurrent
Accrued interest	3,558us-gaap_InterestPayableCurrent	314us-gaap_InterestPayableCurrent
Accrued payroll and severance	19,958us-gaap_AccruedSalariesCurrent	3,640us-gaap_AccruedSalariesCurrent
Accrued taxes	28,974us-gaap_AccruedIncomeTaxesCurrent	63,202us-gaap_AccruedIncomeTaxesCurrent
Accrued commissions/ rebate	40,991flt_AccruedSalesCommissionAndRebates	1,734flt_AccruedSalesCommissionAndRebates
Other	77,217us-gaap_OtherAccruedLiabilitiesCurrent	38,068us-gaap_OtherAccruedLiabilitiesCurrent
Total	$ 178,375us-gaap_AccruedLiabilitiesCurrent	$ 114,870us-gaap_AccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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