Preferred and Common Stock (Tables)

12 Months Ended

Oct. 31, 2017

Stockholders' Equity Note [Abstract]

Schedule of Repurchase Activity

Repurchase Activity

	Years Ended October 31,
(in millions, except per share amounts)	2017		2016		2015
Total number of shares purchased	0.2		1.4		1.0
Average price paid per share	$	40.07	$	33.48	$	30.72
Total cash paid for share repurchases	$	7.9	$	46.6	$	31.4