Stock Based Compensation Plans (Other Plans) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2012
Employee Stock Purchase Plan
Nov-Voting stock reserved for issuance under the Employee Stock Purchase Plan	9,000,000
Cumulative non-voting stock issued under the Employee Stock Purchase Plan	8,000,000
Incentive Plan Stock Alternative
Nov-Voting stock reserved for issuance under the Incentive Plan Stock Alternative	4,800,000
Cumulative non-voting stock issued under the Incentive Plan Stock Alternative	3,800,000
Stock Option Income Deferral Plan
Total shares exercised and placed in trust with the Company	200,000
Atlanta Capital Plan [Member]
Atlanta Capital and Parametric Line Items
Profit units issued during the year	27,500
Weighted-average per unit price	52.30
Compensation cost related to profit units issued under the plan, not yet recognized	2.5
Weighted-average period over which compensation cost related to profit units issued is expected to be recognized (in years)	3 years 1 month
Cumulative profit units granted	175,700
Parametric Plan [Member]
Atlanta Capital and Parametric Line Items
Profit units issued during the year	7,200
Weighted-average per unit price	603.91
Compensation cost related to profit units issued under the plan, not yet recognized	7.3
Weighted-average period over which compensation cost related to profit units issued is expected to be recognized (in years)	3 years 4 months
Cumulative profit units granted	24,700