Consolidated Statements of Shareholder's Equity (USD $) In Thousands, unless otherwise specified	Total	Predecessor	Successor	Common Stock Predecessor	Common Stock Successor	Additional Paid-in Capital Predecessor	Additional Paid-in Capital Successor	Accumulated Other Comprehensive Income (Loss) Predecessor	Accumulated Other Comprehensive Income (Loss) Successor	Retained Earnings Predecessor	Retained Earnings Successor
Balance at Dec. 31, 2009		$ 2,375,614		$ 5,080		$ 2,121,777		$ 1,846		$ 246,911
Increase (Decrease) in Shareholders' Equity
Capital contributions from parent and other		20,129				20,129
Dividend of income tax receivable to SLFI		(705,502)				(463,045)				(242,457)
Change in net unrealized gains (losses):
Investment securities		32,982						32,982
Cash flow hedges		8,036						8,036
Retirement plan liabilities adjustments		108						108
Foreign currency translation adjustments		(5,103)						(5,103)
Net income (loss)		(4,454)								(4,454)
Balance at Nov. 30, 2010	1,689,336	1,721,810	220,144	5,080	5,080	1,678,861	215,064	37,869
Push-down accounting adjustments
Push-down accounting adjustments			(1,501,666)				(1,463,797)		(37,869)
Increase (Decrease) in Shareholders' Equity
Capital contributions from parent and other			10,512				10,512
Change in net unrealized gains (losses):
Investment securities			(4,272)						(4,272)
Cash flow hedges			1,027						1,027
Retirement plan liabilities adjustments			425						425
Foreign currency translation adjustments			386						386
Net income (loss)			1,462,904								1,462,904
Balance at Dec. 31, 2010			1,691,126		5,080		225,576		(2,434)		1,462,904
Increase (Decrease) in Shareholders' Equity
Capital contributions from parent and other			10,500				10,500
Change in net unrealized gains (losses):
Investment securities			9,485						9,485
Cash flow hedges			3,291						3,291
Retirement plan liabilities adjustments			(35,646)						(35,646)
Foreign currency translation adjustments			(234)						(234)
Net income (loss)			(224,723)								(224,723)
Dividends			(45,000)								(45,000)
Balance at Dec. 31, 2011			1,408,799		5,080		236,076		(25,538)		1,193,181
Increase (Decrease) in Shareholders' Equity
Capital contributions from parent and other			19,936				19,936
Change in net unrealized gains (losses):
Investment securities			12,042						12,042
Cash flow hedges			(4,214)						(4,214)
Retirement plan liabilities adjustments			43,341						43,341
Foreign currency translation adjustments			3,975						3,975
Net income (loss)	(220,686)		(220,686)								(220,686)
Balance at Dec. 31, 2012			$ 1,263,193		$ 5,080		$ 256,012		$ 29,606		$ 972,495