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Fair Value - Other non-financial assets (Details) - Other Non-financial Assets - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Fair value measurement on non-recurring basis using significant unobservable inputs (Level 3)
Beginning balances	$ 938,324	$ 762,878
Total gains/income (losses/expense):
Included in net income - realized	(34,128)	(24,830)
Acquired during the period	1,212	200,565
Acquisition adjustments and retirements during the period	(173)	(289)
Ending balances	$ 905,235	$ 938,324

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- Definition

Represents acquisition adjustments during the period in relation to assets measured at fair value on a non-recurring basis and categorized within Level 3 of the fair value hierarchy.

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- Definition

Represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a non-recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

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- Definition

Represents purchases that have taken place during the period in relation to assets measured at fair value on a non-recurring basis and categorized within Level 3 of the fair value hierarchy.

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- Definition

Represents an asset measured at fair value on a non-recurring basis using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

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