Condensed Consolidated Statement of Stockholder's Equity (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified		Total	Common Stock [Member]	Preferred Stock [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2012		$ 13,242,002	$ 12,211,636	$ 195,445	$ 54,334	$ 780,587
Beginning balance, shares at Dec. 31, 2012			520,307,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income/(loss)		226,710			(246,716)	473,426
Stock issued in connection with employee benefit and incentive compensation plans		(1,441)	(1,441)
Dividends paid on preferred stock		(7,300)				(7,300)
Ending balance at Jun. 30, 2013		13,459,971	12,210,195	195,445	(192,382)	1,246,713
Ending balance, shares at Jun. 30, 2013			520,307,000
Beginning balance at Dec. 31, 2013		13,544,983	12,209,816	195,445	(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)		2,109,209			136,464	1,972,745
SCUSA Change in Control	[1]	3,813,275					3,813,275
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		(7,300)				(7,300)
Ending balance at Jun. 30, 2014		$ 21,979,960	$ 14,729,609	$ 195,445	$ (117,904)	$ 3,359,535	$ 3,813,275
Ending balance, shares at Jun. 30, 2014		530,391,043	530,391,000

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