STOCKHOLDERS' EQUITY: - Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2008
SCC share repurchase program:
Percentage of ownership by parent	88.90%
Amount authorized for share repurchase program	$ 3,000	$ 500
Total Number of Shares Purchased	119.5
Cost of purchase of shares	$ 2,900
Closing price of NYSE (in dollars per share)	$ 91.13
Maximum Number of Shares that May Yet Be Purchased Under the Plan @ $86.07	0.9