CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Non- Controlling Interest	Stock Compensation Plans	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning Balance at Jul. 31, 2017	$ 854.5	$ 758.2	$ 0.0	$ 1,041.2	$ 4.4	$ 15.7	$ (157.0)	$ (808.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	60.9			60.9
Other comprehensive income (loss)	(2.0)						(2.0)
Treasury stock acquired	(42.6)							(42.6)
Dividends declared	0.2			0.2
Stock compensation and other activity	10.0		0.8	(0.1)	0.3	2.3		6.7
Ending Balance at Oct. 31, 2017	881.0	758.2	0.8	1,102.2	4.7	18.0	(159.0)	(843.9)
Beginning Balance at Jul. 31, 2017	854.5	758.2	0.0	1,041.2	4.4	15.7	(157.0)	(808.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	77.9
Other comprehensive income (loss)	32.6
Ending Balance at Apr. 30, 2018	836.4	758.2	0.0	1,069.7	4.7	19.4	(124.4)	(891.2)
Beginning Balance at Oct. 31, 2017	881.0	758.2	0.8	1,102.2	4.7	18.0	(159.0)	(843.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	(52.9)			(52.9)
Other comprehensive income (loss)	55.1						55.1
Treasury stock acquired	(20.2)							(20.2)
Dividends declared	(46.9)			(46.9)
Stock compensation and other activity	10.8		(0.8)	(3.6)	(0.1)	(0.4)		15.7
Ending Balance at Jan. 31, 2018	826.9	758.2	0.0	998.8	4.6	17.6	(103.9)	(848.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	69.9			69.9
Other comprehensive income (loss)	(20.5)						(20.5)
Treasury stock acquired	(44.9)							(44.9)
Dividends declared	0.1			0.1
Stock compensation and other activity	4.9			0.9	0.1	1.8		2.1
Ending Balance at Apr. 30, 2018	836.4	758.2	0.0	1,069.7	4.7	19.4	(124.4)	(891.2)
Beginning Balance at Jul. 31, 2018	857.8	758.2	0.0	1,122.1	4.8	21.3	(149.8)	(898.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	73.8			73.8
Other comprehensive income (loss)	(22.1)						(22.1)
Treasury stock acquired	(80.9)							(80.9)
Dividends declared	0.2			0.2
Stock compensation and other activity	25.6			(3.5)		(0.1)		29.2
Ending Balance at Oct. 31, 2018	854.4	758.2	0.0	1,192.6	4.8	21.2	(171.9)	(950.5)
Beginning Balance at Jul. 31, 2018	857.8	758.2	0.0	1,122.1	4.8	21.3	(149.8)	(898.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	209.1
Other comprehensive income (loss)	(8.8)
Ending Balance at Apr. 30, 2019	944.9	758.2	0.0	1,276.0	5.2	22.3	(158.6)	(958.2)
Beginning Balance at Oct. 31, 2018	854.4	758.2	0.0	1,192.6	4.8	21.2	(171.9)	(950.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	60.1			60.1
Other comprehensive income (loss)	24.2						24.2
Treasury stock acquired	(21.1)							(21.1)
Dividends declared	(48.6)			(48.6)
Stock compensation and other activity	3.6			(1.4)	0.4	(0.1)		4.7
Ending Balance at Jan. 31, 2019	872.6	758.2	0.0	1,202.7	5.2	21.1	(147.7)	(966.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	75.2			75.2
Other comprehensive income (loss)	(10.9)						(10.9)
Treasury stock acquired	(2.4)							(2.4)
Dividends declared	0.1			0.1
Stock compensation and other activity	10.3			(2.0)		1.2		11.1
Ending Balance at Apr. 30, 2019	$ 944.9	$ 758.2	$ 0.0	$ 1,276.0	$ 5.2	$ 22.3	$ (158.6)	$ (958.2)