Revenue - Consolidate Balance Sheet (Details) - USD ($) $ in Millions	Apr. 30, 2019	Nov. 01, 2018	Oct. 31, 2018
ASSETS
Trade accounts receivable, net	$ 1,048.0	$ 974.0	$ 1,014.1
Costs incurred in excess of amounts billed	53.8	40.1	0.0
Other current assets	50.9	40.6	37.0
Other noncurrent assets	129.1	121.1	109.6
LIABILITIES AND STOCKHOLDERS’ EQUITY
Other accrued liabilities	175.0	158.9	152.7
Deferred income tax liability, net	32.6	40.3	37.8
Retained earnings	795.9	777.6	771.2
Under Historical Guidance
ASSETS
Trade accounts receivable, net			1,014.1
Costs incurred in excess of amounts billed			0.0
Other current assets	42.7		37.0
Other noncurrent assets	117.6		109.6
LIABILITIES AND STOCKHOLDERS’ EQUITY
Other accrued liabilities	169.0		152.7
Deferred income tax liability, net	31.3		37.8
Retained earnings	783.6		$ 771.2
Effect of Adoption | Accounting Standards Update 2014-09
ASSETS
Trade accounts receivable, net		(40.1)
Costs incurred in excess of amounts billed		40.1
Other current assets	8.1	3.6
Other noncurrent assets	11.5	11.5
LIABILITIES AND STOCKHOLDERS’ EQUITY
Other accrued liabilities	6.0	6.0
Deferred income tax liability, net	1.3	2.6
Retained earnings	$ 12.3	$ 6.5