Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 193.1	$ 814.9	$ 486.4
Gross
Unrecognized pension items	(34.2)	219.1	(13.1)
Unrealized gains (losses) on derivative instruments for net investment hedge	20.0	(109.8)	31.3
Unrealized gains (losses) on derivative instruments for cash flow hedge	3.9	(11.2)	0.3
Unrealized gains (losses) on derivative instruments for cash flow hedge	(49.2)	2.2	(118.1)
Other comprehensive (loss) income	(59.5)	100.3	(99.6)
Taxes
Unrecognized pension items	4.8	(45.8)	2.4
Unrealized gains (losses) on derivative instruments for net investment hedge	(5.0)	42.0	(12.0)
Unrealized gains (losses) on derivative instruments for cash flow hedge	(1.2)	2.4	(0.1)
Foreign currency translation adjustments	(1.2)	5.3	(19.8)
Other comprehensive (loss) income	(2.6)	3.9	(29.5)
Net
Unrecognized pension items	(29.4)	173.3	(10.7)
Unrealized gains (losses) on derivative instruments for net investment hedge	15.0	(67.8)	19.3
Unrealized gains (losses) on derivative instruments for cash flow hedge	2.7	(8.8)	0.2
Foreign currency translation adjustments	(50.4)	7.5	(137.9)
Other comprehensive (loss) income	(62.1)	104.2	(129.1)
Comprehensive income, net of taxes	$ 131.0	$ 919.1	$ 357.3