Earnings Per Share - Schedule of Reconciliation of Net Income to Net Income Available to Common Shareholders (Details) $ / shares in Units, $ in Millions			3 Months Ended						9 Months Ended
	Jun. 26, 2023 shares	Feb. 28, 2022 USD ($)	Sep. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares
Earnings Per Share [Abstract]
Net income			$ 223	$ 204	$ 197	$ 142	$ 329	$ 255	$ 624	$ 727
Net income attributable to noncontrolling interest			5			5			15	14
Net income attributable to controlling interest			218			137			609	713
Preferred stock dividends			5			8			28	24
Net income available to common shareholders			213			129			581	689
Net income available to common shareholders			$ 213			$ 129			$ 581	$ 689
Weighted average common shares outstanding - basic (in shares) | shares			534,222,000			558,559,000			544,356,000	544,952,000
Effect of dilutive restricted stock, performance equity awards and options (in shares) | shares			3,749,000			2,862,000			3,273,000	4,250,000
Effect of dilutive convertible preferred stock (in shares) | shares			0			0			0	12,728,000
Weighted average common shares outstanding - diluted (in shares) | shares			537,971,000			561,421,000			547,629,000	561,930,000
Basic earnings per common share (in dollars per share) | $ / shares			$ 0.40			$ 0.23			$ 1.07	$ 1.26
Diluted earnings per common share (in dollars per share) | $ / shares			$ 0.40			$ 0.23			$ 1.06	$ 1.23
TD Transaction | Series G Convertible Preferred Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Sale of preferred stock, net (approximately)		$ 494
Fixed rate of conversion (in shares)	4,000
Series G preferred stock conversion to common stock (in shares) | shares	19,742,776