STOCKHOLDERS' EQUITY: (Details 2) (USD $)	0 Months Ended	1 Months Ended							3 Months Ended			5 Months Ended	6 Months Ended	7 Months Ended	8 Months Ended	9 Months Ended			12 Months Ended	62 Months Ended
	Oct. 17, 2013	Sep. 30, 2013		Aug. 31, 2013	Jul. 31, 2013	Jun. 30, 2013	May 31, 2013	Apr. 30, 2013	Sep. 30, 2013		Jun. 30, 2013	Dec. 31, 2008	Oct. 14, 2010	Oct. 31, 2012	Dec. 31, 2011	Sep. 30, 2013		Sep. 30, 2009	Dec. 31, 2011	Sep. 30, 2013
SCC share repurchase program:
Amount authorized for share repurchase program	$ 2,000,000,000																		$ 1,000,000,000
Total Number of Shares Purchased		204,012		641,400	1,300,000	1,350,000	807,100	1,500	2,145,412		2,158,600	28,510,150	15,600	4,442,336	9,034,400	4,304,012		4,912,000		51,218,498
Average Price Paid per Share		$ 27.65		$ 26.68	$ 27.60	$ 29.05	$ 32.33	$ 32.96	$ 27.33		$ 30.28	$ 13.49	$ 29.69	$ 33.17	$ 30.29	$ 28.81		$ 14.64		$ 19.56
Total Number of Shares Purchased as Part of Publicly Announced Plan		51,218,498		51,014,486	50,373,086	49,073,086	47,723,086	46,915,986	51,218,498		49,073,086	28,510,150	33,437,750	46,914,486	42,472,150	51,218,498		33,422,150	42,472,150	51,218,498
Maximum Number of Shares that May Yet Be Purchased Under the Plan @ $27.24		36,635,590	[1]						36,635,590	[1]						36,635,590	[1]			36,635,590	[1]
Share purchase price under the plan (in dollars per share)		$ 27.24							$ 27.24							$ 27.24				$ 27.24
Total Cost		$ 5,600,000		$ 17,100,000	$ 35,900,000	$ 39,200,000	$ 26,100,000	$ 100,000	$ 58,600,000		$ 65,400,000	$ 384,700,000	$ 500,000	$ 147,300,000	$ 273,700,000	$ 124,000,000		$ 71,900,000		$ 1,002,100,000
Percentage of ownership interest held by the parent company		81.70%							81.70%							81.70%				81.70%

[1] (*) NYSE closing price of SCC common shares at September 30, 2013.