Income Taxes - Reconciliation of Tax Provision for Continuing Operations (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Tax provision at U.S. statutory rate	35.00%	35.00%	35.00%
Valuation allowance on deferred tax assets	(191.10%)	27.70%	(108.10%)
Tax exempt interest	(17.50%)	(19.70%)	4.10%
Tax on undistributed foreign earnings	6.10%	1.30%	(21.80%)
Foreign tax rate differential	(5.80%)	(3.00%)	1.20%
Audit settlements & unrecognized tax benefits	3.80%	(13.20%)	0.00%
U.S. permanent items	(1.30%)	0.50%	0.00%
U.S. tax on foreign earnings	(0.70%)	0.50%	0.40%
Other adjustments	(0.60%)	(2.80%)	(3.90%)
State and local income tax	0.60%	1.40%	0.50%
Medicare Part D subsidy	0.00%	(1.10%)	0.40%
Change in state tax rate	0.00%	0.00%	9.70%
Effective income tax rate	(171.50%)	26.60%	(82.50%)