EARNINGS PER SHARE: - Computation of Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
EARNINGS PER SHARE:
Net income	$ 976.7	$ 953.8	$ 1,925.8	$ 1,692.6
Less: Net income attributable to the non-controlling interest	3.2	3.6	6.4	6.4
Net income attributable to SCC	$ 973.4	$ 950.2	$ 1,919.4	$ 1,686.2
Weighted average shares outstanding-basic	807.8	785.6	804.1	783.2
Weighted average shares outstanding-diluted	807.8	785.6	804.1	783.2
Basic and diluted net income per share:
Common shares-basic	$ 1.21	$ 1.21	$ 2.39	$ 2.15
Common shares-diluted	$ 1.21	$ 1.21	$ 2.39	$ 2.15