Equity (Reconciliation of Ordinary Shares) (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Treasury Stock, Shares, Acquired	(0.5)
Ordinary shares [Member]
Beginning balance, shares	95.8	96.0	0.0
Shares issued under incentive plans	0.7	0.8
Treasury Stock, Shares, Acquired	(0.5)		(1.0)
Ending balance, shares	96.0	95.8	96.0