Equity - Narrative (Details) $ / shares in Units, $ in Millions				1 Months Ended	12 Months Ended
	Feb. 11, 2025 $ / shares	Mar. 15, 2024 USD ($) $ / shares shares	Mar. 14, 2019 $ / shares shares	Feb. 07, 2025 USD ($) shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Apr. 30, 2024 USD ($)
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)					$ 5.00	$ 5.00
Redemption of preferred stock | $					$ 485	$ 0	$ 0
Redemption premium realized | $		$ 15
Outstanding par and additional paid in capital amount of preferred stock | $		$ 485			$ 485
Common stock, par value (in dollars per share)					$ 2.50	$ 2.50
Authorized repurchase amount | $								$ 10,000
Remaining authorized repurchase amount | $								$ 3,900
Shares purchased (in shares) | shares					89,500,000	50,800,000	90,100,000
Aggregate repurchases of common stock | $					$ 6,713	$ 3,014	$ 5,149
Dividends declared, common stock (in dollars per share)					$ 1.56	$ 1.40	$ 1.28
Subsequent event
Class of Stock [Line Items]
Shares purchased (in shares) | shares				13,000,000
Aggregate repurchases of common stock | $				$ 952
Dividends declared, common stock (in dollars per share)	$ 0.40
Series A Preferred Stock
Class of Stock [Line Items]
Issuances (in shares) | shares			20,000
Preferred stock, dividend rate (as a percent)			5.85%
Preferred stock, par value (in dollars per share)			$ 5.00
Preferred stock liquidation preference (in dollars per share)			$ 25,000
Stock redeemed during the period (in shares) | shares		20,000
Preferred stock redemption price per share (in USD per share)		$ 25,000
Redemption of preferred stock | $		$ 500
Series A Depositary Shares
Class of Stock [Line Items]
Issuances (in shares) | shares			20,000,000
Depository shares, equity interest in preferred stock (as a percent)			0.001
Preferred stock liquidation preference (in dollars per share)			$ 25
Stock redeemed during the period (in shares) | shares		20,000,000
Preferred stock redemption, depository shares equity interest in preferred stock (as a percent)		0.001
Preferred stock redemption price per share (in USD per share)		$ 25.00