Stockholders' Equity - Common Stock Dividends and Reconciliation of Outstanding Common Shares (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended								12 Months Ended
	Sep. 30, 2022	Aug. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Jan. 31, 2022	Jun. 30, 2021	Feb. 29, 2020	Nov. 30, 2018	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Aug. 16, 2022
Common stock share repurchase disclosures
Amount of forward contract recorded in additional paid in capital									$ 33.9
Common stock
Common Stock Dividends
Dividends declared per common share (in dollars per share)									$ 2.56	$ 2.44	$ 2.24
Reconciliation of Outstanding Common Shares
Outstanding shares at beginning of period					261.7				261.7	273.3	276.6
Shares issued									4.9	3.0	2.6
Treasury stock acquired									(23.1)	(14.6)	(5.9)
Outstanding shares at end of period									243.5	261.7	273.3
Common stock share repurchase disclosures
Share repurchase program, maximum authorized amount (in dollars)					$ 1,600.0	$ 1,200.0	$ 900.0	$ 500.0
Common stock | March 2022 Accelerated Share Repurchase Program
Common stock share repurchase disclosures
Share repurchase program, maximum authorized amount (in dollars)				$ 700.0
Number of shares repurchased			1.4	8.5
Initial cost of shares repurchased				$ 560.0
Amount of forward contract recorded in additional paid in capital				$ 140.0
Volume-weighted average price of our common stock			$ 70.53
Common stock | August 2022 Accelerated Share Repurchase Program
Common stock share repurchase disclosures
Share repurchase program, maximum authorized amount (in dollars)		$ 400.0
Number of shares repurchased	1.2	4.1
Initial cost of shares repurchased												$ 320.0
Volume-weighted average price of our common stock	$ 76.48