Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 502.9	$ 263.0	$ 193.1
Gross
Unrecognized pension items	(35.2)	(13.9)	(34.2)
Unrealized (losses) gains on derivative instruments for net investment hedge	(44.0)	9.8	20.0
Unrealized (losses) gains on derivative instruments for cash flow hedge	(2.9)	(3.4)	3.9
Foreign currency translation adjustments	7.0	17.0	(49.2)
Other comprehensive (loss) income	(75.1)	9.5	(59.5)
Taxes
Unrecognized pension items	8.8	4.2	4.8
Unrealized (losses) gains on derivative instruments for net investment hedge	11.0	(2.4)	(5.0)
Unrealized (losses) gains on derivative instruments for cash flow hedge	0.9	0.9	(1.2)
Foreign currency translation adjustments	(0.1)	(0.8)	(1.2)
Other comprehensive (loss) income	20.6	1.9	(2.6)
Net
Unrecognized pension items	(26.4)	(9.7)	(29.4)
Unrealized (losses) gains on derivative instruments for net investment hedge	(33.0)	7.4	15.0
Unrealized (losses) gains on derivative instruments for cash flow hedge	(2.0)	(2.5)	2.7
Foreign currency translation adjustments	6.9	16.2	(50.4)
Other comprehensive (loss) income	(54.5)	11.4	(62.1)
Comprehensive income, net of taxes	$ 448.4	$ 274.4	$ 131.0