EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Basic earnings per share:
Weighted-average shares outstanding	183.5	186.6
Net earnings attributable to shareholders	$ 119.9	$ 72.7
Dividends and undistributed earnings attributable to unvested shares	(0.7)	(0.3)
Net earnings attributable to shareholders used for basic earnings per share calculation	$ 119.2	$ 72.4
Net earnings attributable to shareholders (in dollars per share)	$ 0.65	$ 0.39
Diluted earnings per share:
Weighted-average shares outstanding	183.5	186.6
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights	0.4	0.1
Weighted-average shares — diluted	183.9	186.7
Net earnings attributable to shareholders	$ 119.9	$ 72.7
Dividends and undistributed earnings attributable to unvested shares	(0.7)	(0.3)
Net earnings attributable to shareholders used for diluted earnings per share calculation	$ 119.2	$ 72.4
Net earnings attributable to shareholders per share (in dollars per share)	$ 0.65	$ 0.39
Potential shares outstanding	3.6
Potential shares outstanding, not included in the diluted earnings per share calculation	3.2	3.5