Consolidated Statements of Changes in Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Preferred Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2016		345.9	0.0
Beginning balance at Dec. 31, 2016		$ 3.5	$ 0.0	$ 2,427.2	$ 403.0	$ (145.8)	$ 3.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings for the period	$ 1,044.5				1,044.5
Dividends to common shareholders					(97.2)
Non-cash adjustment to Net Former Parent investment				(50.2)
Other comprehensive income (loss)	138.2					138.2
Common stock-based award activity (in shares)		1.9
Common stock-based award activity				67.1
Issuance of mandatory convertible preferred stock	0.0
Changes in noncontrolling interests							14.8
Ending balance (in shares) at Dec. 31, 2017		347.8	0.0
Ending balance at Dec. 31, 2017		$ 3.5	$ 0.0	2,444.1	1,350.3	(7.6)	17.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings for the period	2,913.8				2,913.8
Dividends to common shareholders	(96.6)				(96.6)
Mandatory convertible preferred dividends	(34.9)				(34.9)
Non-cash adjustment to Net Former Parent investment				9.1
Other comprehensive income (loss)	(123.7)					(123.7)
Common stock-based award activity (in shares)		2.5
Common stock-based award activity		$ 0.1		95.7
Issuance of mandatory convertible preferred stock (in shares)			1.4
Issuance of mandatory convertible preferred stock	1,337.4			1,337.0
Split-off of A&S Business (in shares)		(15.8)
Split-off of A&S Business	44.7	$ (0.2)		(759.9)	(576.0)	44.7
Changes in noncontrolling interests							(0.5)
Ending balance (in shares) at Dec. 31, 2018		334.5	1.4
Ending balance at Dec. 31, 2018	6,612.9	$ 3.4	$ 0.0	3,126.0	3,552.7	(86.6)	17.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings for the period	738.9				738.9
Dividends to common shareholders	(93.8)				(93.8)
Mandatory convertible preferred dividends	(69.0)				(69.0)
Other comprehensive income (loss)	30.3					30.3
Common stock-based award activity (in shares)		1.5
Common stock-based award activity				88.8
Issuance of mandatory convertible preferred stock	0.0
Issuance of 0.875% senior convertible notes due 2022				100.4
Changes in noncontrolling interests							(4.2)
Net transfers to Former Parent				(4.1)			0.0
Ending balance (in shares) at Dec. 31, 2019		336.0	1.4
Ending balance at Dec. 31, 2019	$ 7,400.2	$ 3.4	$ 0.0	$ 3,311.1	$ 4,128.8	$ (56.3)	$ 13.2