Assets and Liabilities Associated with Discontinued Operations (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other invested assets	$ 0	$ 10
Cash and cash equivalents	0	21	45
Intangible assets	0	115
Goodwill	0	260
Other assets	0	33
Assets associated with discontinued operations	0	439
Other liabilities	0	48
Deferred tax liability	0	13
Liabilities associated with discontinued operations	$ 0	$ 61