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SUBSEQUENT EVENTS - Additional Information (Detail) (Subsequent Event [Member]) In Millions, unless otherwise specified	1 Months Ended
	Oct. 31, 2012 USD ($)	Oct. 31, 2012 RUB
Subsequent Event [Line Items]
Decreased guarantees limit	$ 39.9	1,200.0
Guarantee limit	$ 695.6	21,500.0

- Definition

Total net amount of increases and decreases to the liability for guaranteed minimum benefits on long-duration contracts occurring during the period, for all guaranteed benefit types.

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