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	$ 3,008.2	$ 2,650.9	$ 2,492.1
Other comprehensive income (loss), net of income taxes:
Foreign currency translation adjustments	(75.2)	(632.2)	976.1
Pension and postretirement plan benefit adjustments	(90.4)	(12.7)	71.0
Unrealized gain (loss) on available-for-sale securities	1.2	(0.8)	(19.6)
Cash flow hedge adjustments	(112.8)	0.0	0.0
Total other comprehensive income (loss), net of income taxes	(277.2)	(645.7)	1,027.5
Comprehensive income	$ 2,731.0	$ 2,005.2	$ 3,519.6