CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 18.5	$ 22.0
Common stock, par value (USD per share)	$ 1.00	$ 1.00
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	441,400,000	441,400,000
Treasury stock, shares	94,600,000	96,100,000