Condensed Consolidated Statements of Stockholder's Equity (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified		Total USD ($)	Common Stock [Member]	Preferred Stock [Member] USD ($)	Common Stock and Paid-in Capital [Member] USD ($)	Accumulated Other Comprehensive Income/(Loss) [Member] USD ($)	Retained Earnings [Member] USD ($)	Noncontrolling Interest [Member] USD ($)
Beginning balance at Dec. 31, 2012		$ 13,242,002		$ 195,445	$ 12,211,636	$ 54,334	$ 780,587
Beginning balance, shares at Dec. 31, 2012			520,307,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income/(loss)		291,675				(258,459)	550,134
Stock issued in connection with employee benefit and incentive compensation plans		(1,229)			(1,229)
Dividends paid on preferred stock		(10,950)					(10,950)
Ending balance at Sep. 30, 2013		13,521,498		195,445	12,210,407	(204,125)	1,319,771
Ending balance, shares at Sep. 30, 2013			520,307,000
Beginning balance at Dec. 31, 2013		13,544,983		195,445	12,209,816	(254,368)	1,394,090	0
Beginning balance, shares at Dec. 31, 2013		520,307,043	520,307,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income/(loss)		2,313,837				136,420	2,177,417
SCUSA Change in Control	[1]	3,872,370						3,872,370
Issuance of common stock, shares			10,084,000
Issuance of common stock		2,521,000			2,521,000
Stock issued in connection with employee benefit and incentive compensation plans		(1,207)			(1,207)
Dividends paid on preferred stock		(10,950)					(10,950)
Ending balance at Sep. 30, 2014		$ 22,240,033		$ 195,445	$ 14,729,609	$ (117,948)	$ 3,560,557	$ 3,872,370
Ending balance, shares at Sep. 30, 2014		530,391,043	530,391,000

[1] Refer to Note 3 to the Condensed Consolidated Financial Statements for further discussion.