CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 21.4	$ 24.4
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	99,000,000	101,700,000