Capital Stock - Summary of Cash Dividend Activity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Class of Stock Disclosures [Abstract]
Cash Dividend per Share (in dollars per share)	$ 1.71	$ 1.71	$ 1.71	$ 1.71	$ 1.63	$ 1.63	$ 1.63	$ 1.63
Total	$ 377	$ 381	$ 385	$ 386	$ 373	$ 378	$ 378	$ 379	$ 1,529	$ 1,508	$ 1,395