Condensed Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Preferred Stock, Par or Stated Value Per Share	$ 0	$ 0
Preferred stock, authorized	165,000,000.0	165,000,000.0
Preferred stock, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	3,500,000,000	3,500,000,000
Common stock, issued	1,660,600,000	1,660,600,000
Common stock in treasury, shares	930,500,000	929,300,000
Short-term borrowings and current maturities of long-term debt	$ 524.2	$ 0.0