The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

This element represents the acquisition-date fair value of the total consideration transferred which consists of the sum of the acquisition-date fair values of the assets transferred by the acquirer, the liabilities incurred by the acquirer to former owners of the acquiree, and the equity interests issued by the acquirer.

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- Definition

The cash outflow to acquire an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics.

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SIGNIFICANT ACQUISITIONS (Details) (USD $)	12 Months Ended			1 Months Ended
SIGNIFICANT ACQUISITIONS (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010	Apr. 29, 2011 Liberty Life PLICO	Apr. 30, 2011 Liberty Life PLICO Athene Life Re	Dec. 31, 2010 United Investors PLICO
Significant acquisitions
Aggregate purchase price			$ 225,000,000		$ 363,300,000
Capital invested			321,000,000
Investment in surplus note issued by Athene Life Re				40,000,000
Pro forma condensed consolidated results of operations
Revenue	3,648,971,000	3,482,514,000
Net income	$ 316,429,000	$ 272,436,000
EPS - basic (in dollars per share)	$ 3.71	$ 3.15
EPS - diluted (in dollars per share)	$ 3.66	$ 3.11