Stockholders' Equity (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Oct. 31, 2021
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)	10,000,000						10,000,000		10,000,000
Stockholders' equity	$ 12,749,000,000	$ 12,655,800,000	$ 12,101,800,000	$ 11,847,200,000	$ 11,635,700,000	$ 11,587,800,000	$ 12,749,000,000	$ 11,847,200,000	$ 11,897,900,000	$ 11,259,500,000
Stock repurchase program, number of shares authorized to be repurchased (in shares)											25,000,000
Stock repurchase, shares (in shares)	3,463,546			14,738			8,112,288	2,426,793
Stock repurchase, aggregate cost	$ 301,400,000	250,800,000	132,000,000.0	$ 1,100,000	99,300,000	100,900,000	$ 684,200,000	$ 201,300,000
Share-based payment arrangement, shares withheld for tax withholding obligation (in shares)	15,629			14,738			398,646	356,145
Average price paid per share for common stock repurchased (in usd per share)	$ 87.01			$ 77.39			$ 84.34	$ 82.95
Preferred Stock
Class of Stock [Line Items]
Stockholders' equity	$ 884,900,000	$ 884,900,000	$ 884,900,000	$ 884,900,000	$ 884,900,000	$ 884,900,000	$ 884,900,000	$ 884,900,000	$ 884,900,000	$ 884,900,000
Series D Preferred Stock
Class of Stock [Line Items]
Preferred stock, outstanding (in shares)	5,000						5,000		5,000
Preferred stock, without par value (in dollars per share)	$ 0						$ 0
Preferred stock, liquidation preference	$ 100,000						$ 100,000
Depository shares, liquidation preference per share (in dollars per share)	$ 1,000						$ 1,000
Preferred stock, annual dividend rate							4.60%
Preferred stock, dividend payment rate, variable rate							3.202%
Preferred stock, dividends declared (in usd per share)	$ 2,300
Series D Preferred Stock | Preferred Stock
Class of Stock [Line Items]
Stockholders' equity	$ 493,500,000						$ 493,500,000		$ 493,500,000
Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock, outstanding (in shares)	16,000						16,000		16,000
Percentage of ownership interest per each depository shares	0.10%						0.10%
Preferred stock, without par value (in dollars per share)	$ 0						$ 0
Preferred stock, liquidation preference	$ 25,000						$ 25,000
Depository shares, liquidation preference per share (in dollars per share)	$ 25						$ 25
Preferred stock, annual dividend rate							4.70%
Preferred stock, dividends declared (in usd per share)	$ 293.75
Series E Preferred Stock | Preferred Stock
Class of Stock [Line Items]
Stockholders' equity	$ 391,400,000						$ 391,400,000		$ 391,400,000
Series D Preferred Stock, Depositary Shares
Class of Stock [Line Items]
Preferred stock, outstanding (in shares)	500,000						500,000
Preferred stock, shares issued (in shares)	500,000						500,000
Percentage of ownership interest per each depository shares	1.00%						1.00%
Series E Preferred Stock Depositary Shares
Class of Stock [Line Items]
Preferred stock, outstanding (in shares)	16,000,000						16,000,000
Preferred stock, shares issued (in shares)	16,000,000						16,000,000