Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Millions, $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Receivables, allowances	$ 38.3	$ 40.2
Allowance for contract assets	1.2	2.4
Property, plant and equipment, accumulated depreciation	2,386.3	2,154.2
Intangible assets, accumulated amortization	$ 468.9	$ 493.1
Ordinary shares, par value (in dollars)	$ 1.00	$ 1.00
Ordinary shares, shares authorized (in shares)	618.3	618.3
Ordinary shares, shares issued (in shares)	450.6	449.5
Ordinary shares, shares outstanding (in shares)	450.6	449.5