Reinsurance - Summary of Amounts Receivable from Reinsurers (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Reinsurance receivables related to insurance reserves:
Ceded claim and claim adjustment expenses	$ 4,972	$ 5,126
Ceded future policy benefits	733	759
Ceded policyholders' funds	35	35
Reinsurance receivables related to paid losses	348	311
Reinsurance receivables	6,088	6,231
Less allowance for doubtful accounts	71	73
Reinsurance receivables, net of allowance for doubtful accounts	$ 6,017	$ 6,158

Amount after valuation allowance currently billed or billable under reinsurance contracts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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