Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Nov. 30, 2012	Nov. 30, 2011	Nov. 30, 2010	Nov. 30, 2009
Tax Credit Carryforward [Line Items]
Non-U.S. subsidiaries tax loss carryforwards	$ 145.9
Excess tax benefits related to stock-based compensation	15.0
Tax loss carryforwards expiring through 2015	32.5
Tax loss carryforwards expiring from 2016 through 2024	39.9
Tax loss carryforwards indefinitely	73.5
Non-U.S. subsidiaries capital loss carryforwards	6.0
Tax credit carryforwards	25.0
Net increase in the valuation allowance	0.9
Unremitted earnings	968.2
Unrecognized tax benefits	46.7	33.2	20.7	31.2
Statute expirations	1.2	1.2	15.8
Reversal of a tax accrual for a closed year		13.9
Interest and penalty (income) / expense	1.4	0.6	(2.2)
Interest and penalties accrued	4.0	1.7
Tax benefits that would impact effective tax rate	40.0
2020 Expiration [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	8.0
Tax credit carryforwards expiration year	Dec. 31, 2020
2021 Expiration [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	0.6
Tax credit carryforwards expiration year	Dec. 31, 2021
2022 Expiration [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 16.4
Tax credit carryforwards expiration year	Dec. 31, 2022