Employee Benefit Plans - Restricted Stock Units (Detail) (Restricted Stock Units, USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2014		Oct. 31, 2013		Oct. 31, 2012		Oct. 31, 2011
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted Stock Awards, Beginning balance	3,983,000		3,920,000		3,454,000
Restricted Stock Units, Granted	1,645,000		1,680,000		1,813,000
Restricted Stock Units, Assumed					353,000	[1]
Restricted Stock Units, Vested	(1,564,000)	[2]	(1,476,000)	[2]	(1,508,000)	[2]
Restricted Stock Units, Forfeited	(117,000)		(141,000)		(192,000)
Restricted Stock Awards, Ending balance	3,947,000		3,983,000		3,920,000		3,454,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Beginning balance	$ 27.51		$ 27.18		$ 24.28
Granted	$ 39.03		$ 35.27		$ 29.52
Assumed					$ 30.33	[1]
Vested	$ 38.87	[2]	$ 35.40	[2]	$ 24.14	[2]
Forfeited	$ 32.95		$ 28.36		$ 26.70
Weighted Average Grant Date Fair Value, Ending balance	$ 27.65		$ 27.51		$ 27.18		$ 24.28
Weighted Average Remaining Contractual Life	1 year 6 months 11 days		1 year 6 months 4 days		1 year 6 months 7 days		1 year 5 months 23 days
Aggregate Fair Value, Vested	$ 60,815	[2]	$ 52,234	[2]	$ 36,402	[2]

[1] The Company assumed certain restricted stock units outstanding under various plans through acquisitions.

[2] The number of vested restricted stock units includes shares that were withheld on behalf of employees to satisfy the statutory tax withholding requirements.