Supplemental Information (Unaudited) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Supplemental Information (Unaudited)
Revenues	$ 476.4	$ 451.7	$ 431.3	$ 408.1	$ 443.7	$ 422.7	$ 413.3	$ 394.9	$ 1,767.5	$ 1,674.6	$ 1,621.4
Interest expense	84.4	85.0	95.3	87.5	101.7	109.2	125.4	119.3	352.2	455.6	479.3
Operating expenses	186.9	170.0	166.9	165.7	163.2	159.1	158.8	138.8	689.5	619.9	570.5
Provision for income taxes	72.3	72.2	63.7	50.2	66.7	56.0	51.1	44.0	258.4	217.8	209.2
Equity in income of unconsolidated affiliate	0.1	0.2	0.5	0.3	0.5	0.1	0.3	0.5	1.1	1.4	1.2
Net income attributable to the Company	$ 132.9	$ 124.7	$ 105.9	$ 105.0	$ 112.6	$ 98.5	$ 78.3	$ 93.3	$ 468.5	$ 382.7	$ 363.6