Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Common stock dividends declared and paid		$ 1,800	$ 1,700	$ 3,500
Preferred stock dividends declared and paid		59	59	59
Amount set aside for preferred stock payments	$ 59
Series A
Class of Stock [Line Items]
Preferred stock dividends declared and paid	$ 29	58	58	58
Preferred stock dividends declared (in dollars per share)	$ 28.75
Series B
Class of Stock [Line Items]
Preferred stock dividends declared and paid	$ 16	32	32	32
Preferred stock dividends declared (in dollars per share)	$ 32.50
Series C
Class of Stock [Line Items]
Preferred stock dividends declared and paid	$ 14	$ 29	$ 29	$ 30
Preferred stock dividends declared (in dollars per share)	$ 28.50