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Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended			3 Months Ended
	Jan. 31, 2026	Apr. 30, 2025	Jan. 31, 2025	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Dividends paid to common shareholders				$ 7,972	$ 2,695
Cash dividends declared on common stock (in dollars per share)				$ 0.10	$ 0.10
Dividends payable on common shares				$ 58	$ 59	$ 7,972
Common equities
Dividends payable on common shares				$ 58	$ 59
O2025A
Cash dividends paid on common stock (in dollars per share)	$ 13.50
Dividends paid to common shareholders	$ 7,913
O2024A
Cash dividends paid on common stock (in dollars per share)			$ 4.50
Dividends paid to common shareholders			$ 2,637
O2026Q1
Cash dividends declared on common stock (in dollars per share)				$ 0.10
O2026Q1 \| Common equities
Dividends payable on common shares				$ 58
O2025Q4
Cash dividends paid on common stock (in dollars per share)	$ 0.10
Dividends paid to common shareholders	$ 59
O2025Q1
Cash dividends paid on common stock (in dollars per share)		$ 0.10
Dividends paid to common shareholders		$ 59
O2024Q4
Cash dividends paid on common stock (in dollars per share)			$ 0.10
Dividends paid to common shareholders			$ 58