Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accounts and notes receivable, allowances	$ 8.8	$ 10.3
Ordinary shares, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock authorized (in shares)	426,000,000	426,000,000
Common shares issued (in shares)	165,900,000	168,300,000