Consolidated Statements of Stockholders' (Deficit) Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock in Treasury	Accumulated Other Comprehensive Loss, Net of Taxes
Beginning Balance at Dec. 31, 2018	$ (348.6)	$ 23.2	$ 2,049.6	$ 1,835.5	$ (3,336.5)	$ (920.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of share-based incentive compensation	23.4		23.4
Stock issued for profit sharing contribution paid in stock	21.9		0.5		21.4
Repurchases of common stock	(67.3)				(67.3)
Unrecognized pension items, net of taxes	(9.7)					(9.7)
Foreign currency translation adjustments, net of taxes	16.2					16.2
Unrealized gain (loss) on derivative instruments, net of taxes	4.9					4.9
Net earnings	263.0			263.0
Dividends on common stock	(100.0)			(100.0)
Ending Balance at Dec. 31, 2019	(196.2)	23.2	2,073.5	1,998.5	(3,382.4)	(909.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of share-based incentive compensation	31.2		31.2
Stock issued for profit sharing contribution paid in stock	24.4		(11.7)		36.1
Repurchases of common stock	(34.6)				(34.6)
Unrecognized pension items, net of taxes	(26.4)					(26.4)
Foreign currency translation adjustments, net of taxes	6.9					6.9
Unrealized gain (loss) on derivative instruments, net of taxes	(35.0)					(35.0)
Net earnings	502.9			502.9
Dividends on common stock	(100.7)			(100.7)
Ending Balance at Dec. 31, 2020	172.5	23.2	2,093.0	2,400.7	(3,380.9)	(963.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of share-based incentive compensation	30.2		30.2
Stock issued for profit sharing contribution paid in stock	28.0		0.2		27.8
Repurchases of common stock	(401.6)				(401.6)
Unrecognized pension items, net of taxes	35.0					35.0
Foreign currency translation adjustments, net of taxes	(38.8)					(38.8)
Unrealized gain (loss) on derivative instruments, net of taxes	33.4					33.4
Net earnings	506.8			506.8
Dividends on common stock	(116.8)			(116.8)
Ending Balance at Dec. 31, 2021	$ 248.7	$ 23.2	$ 2,123.4	$ 2,790.7	$ (3,754.7)	$ (933.9)