Consolidated and Combined Statement of Changes in Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Net Former Parent Investment	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Common stock outstanding (in shares)		0
Equity, beginning of period at Dec. 31, 2014		$ 0.0	$ 0.0	$ 0.0	$ 5,129.8	$ 99.5	$ 3.2
Net earnings for the year	$ 863.8				863.8
Net Transfers To Former Parent	834.9				(834.9)
Other comprehensive loss	(113.9)					(113.9)
Common stock-based award activity					35.2
Change in noncontrolling interest							(0.2)
Equity, end of period at Dec. 31, 2015		$ 0.0	0.0	0.0	5,193.9	(14.4)	3.0
Common stock outstanding (in shares)		0
Net earnings for the year	872.3			451.4	420.9
Recapitalization (in shares)		345,200,000
Recapitalization		$ 3.5			(3.5)
Cash dividend paid to Former Parent					(3,000.0)
Dividends to stockholders				(48.4)
Net Transfers To Former Parent	301.4				(301.4)
Noncash adjustment to Former Parent's investment, net			2,381.3		(2,332.3)
Other comprehensive loss	(131.4)					(131.4)
Common stock-based award activity			45.9		22.4
Common stock-based award activity (in shares)		700,000
Change in noncontrolling interest							0.1
Equity, end of period at Dec. 31, 2016	2,691.0	$ 3.5	2,427.2	403.0	0.0	(145.8)	3.1
Net earnings for the year	224.5
Equity, end of period at Dec. 31, 2016	$ 2,691.0	$ 3.5	2,427.2	403.0	0.0	(145.8)	3.1
Common stock outstanding (in shares)	345,900,000	345,900,000
Net earnings for the year	$ 1,044.5			1,044.5
Dividends to stockholders	(97.2)			(97.2)
Net Transfers To Former Parent	0.0
Noncash adjustment to Former Parent's investment, net			(50.2)
Other comprehensive loss	138.2					138.2
Common stock-based award activity			67.1
Common stock-based award activity (in shares)		1,900,000
Change in noncontrolling interest							14.8
Equity, end of period at Dec. 31, 2017	$ 3,808.2	$ 3.5	$ 2,444.1	$ 1,350.3	$ 0.0	$ (7.6)	$ 17.9
Common stock outstanding (in shares)	347,800,000	347,800,000