Equity (Reconciliation of Ordinary Shares) (Details) - Ordinary shares - shares shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Beginning balance, shares	88.2	91.2	92.7
Shares issued under incentive plans	0.2	0.3	0.4
Repurchase of ordinary shares	(0.5)	(3.3)	(1.9)
Ending balance, shares	87.9	88.2	91.2