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Business Basis of Presentation and Summary of Significant Accounting Policies (Policies)
9 Months Ended
Sep. 30, 2011
Business, Basis of Presentation and Summary of Significant Accounting Policies [Abstract] 
Basis of presentation related to acquisition
 
On November 1, 2010 (the “Acquisition Date”), MetLife, Inc. completed the acquisition of American Life Insurance Company (“American Life”) from AM Holdings LLC (formerly known as ALICO Holdings LLC) (“AM Holdings”), a subsidiary of American International Group, Inc. (“AIG”), and Delaware American Life Insurance Company (“DelAm”) from AIG (American Life, together with DelAm, collectively, “ALICO”) (the “Acquisition”). The Acquisition was accounted for using the acquisition method of accounting. ALICO’s fiscal year-end is November 30. Accordingly, the Company’s interim condensed consolidated financial statements reflect the assets and liabilities of ALICO as of August 31, 2011 and the operating results of ALICO for the three months and nine months ended August 31, 2011. The accounting policies of ALICO were conformed to those of MetLife upon the Acquisition. See Note 2.
Use of Estimates
 
In applying the Company’s accounting policies, management makes subjective and complex judgments that frequently require estimates about matters that are inherently uncertain. Many of these policies, estimates and related judgments are common in the insurance and financial services industries; others are specific to the Company’s businesses and operations. Actual results could differ from these estimates.
Consolidation of Subsidiaries
 
The accompanying interim condensed consolidated financial statements include the accounts of the Holding Company and its subsidiaries, as well as partnerships and joint ventures in which the Company has control, and variable interest entities (“VIEs”) for which the Company is the primary beneficiary. Closed block assets, liabilities, revenues and expenses are combined on a line-by-line basis with the assets, liabilities, revenues and expenses outside the closed block based on the nature of the particular item. See Note 7. Intercompany accounts and transactions have been eliminated.
 
The Company uses the equity method of accounting for investments in equity securities in which it has a significant influence or more than a 20% interest and for real estate joint ventures and other limited partnership interests in which it has more than a minor equity interest or more than a minor influence over the joint venture’s or partnership’s operations, but does not have a controlling interest and is not the primary beneficiary. The Company uses the cost method of accounting for investments in real estate joint ventures and other limited partnership interests in which it has a minor equity investment and virtually no influence over the joint venture’s or the partnership’s operations.