Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 263.0	$ 193.1	$ 814.9
Gross
Unrecognized pension items	(13.9)	(34.2)	219.1
Unrealized gains (losses) on derivative instruments for net investment hedge	9.8	20.0	(109.8)
Unrealized (losses) gains on derivative instruments for cash flow hedge	(3.4)	3.9	(11.2)
Unrealized (losses) gains on derivative instruments for cash flow hedge	17.0	(49.2)	2.2
Other comprehensive income (loss)	9.5	(59.5)	100.3
Taxes
Unrecognized pension items	4.2	4.8	(45.8)
Unrealized gains (losses) on derivative instruments for net investment hedge	(2.4)	(5.0)	42.0
Unrealized (losses) gains on derivative instruments for cash flow hedge	0.9	(1.2)	2.4
Foreign currency translation adjustments	(0.8)	(1.2)	5.3
Other comprehensive income (loss)	1.9	(2.6)	3.9
Net
Unrecognized pension items	(9.7)	(29.4)	173.3
Unrealized gains (losses) on derivative instruments for net investment hedge	7.4	15.0	(67.8)
Unrealized (losses) gains on derivative instruments for cash flow hedge	(2.5)	2.7	(8.8)
Foreign currency translation adjustments	16.2	(50.4)	7.5
Other comprehensive income (loss)	11.4	(62.1)	104.2
Comprehensive income, net of taxes	$ 274.4	$ 131.0	$ 919.1