Financing Arrangements (Components Of Outstanding Debt) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Nov. 30, 2014		Nov. 30, 2013		Sep. 30, 2013
Schedule of Short Term and Long Term Debt [Line Items]
Commercial paper	$ 239.4		$ 200.3
Other	30.2		11.3
Short-term borrowings, total	269.6		211.6
Weighted-average interest rate of short-term borrowings at year-end	1.30%		0.70%
Other	8.5		10.8
Unamortized discounts and fair value adjustments	1.8		5.7
Long-term debt	1,015.3		1,021.5
Less current portion	(1.2)		(2.5)
Long-term debt, total	1,014.1		1,019.0
3.50% Notes Due 2023 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding			250.0
Debt instrument interest rate			3.50%
Notes Payable, Other Payables [Member] | 3.50% Notes Due 2023 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	250.0	[1]	250.0	[1]
Debt instrument interest rate	3.50%		3.50%
Debt instrument maturity year	2023		2023
Notes Payable, Other Payables [Member] | 5.25% Notes Due 2013 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding					250.0
Debt instrument interest rate			5.25%		5.25%
Debt instrument maturity year			2013
Notes Payable, Other Payables [Member] | 5.20% Notes Due 2015 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	200.0	[2]	200.0	[2]
Debt instrument interest rate	5.20%		5.20%
Debt instrument maturity year	2015		2015
Net interest payments, percentage below LIBOR	0.05%
Debt Instrument, effective interest rate	0.19%
Notes Payable, Other Payables [Member] | 5.75% Notes Due 2017 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	250.0	[3]	250.0	[3]
Debt instrument interest rate	5.75%		5.75%
Debt instrument maturity year	2017		2017
Notes Payable, Other Payables [Member] | 3.90% Notes Due 2021 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	250.0	[4]	250.0	[4]
Debt instrument interest rate	3.90%		3.90%
Debt instrument maturity year	2021		2021
Notes Payable, Other Payables [Member] | 7.63%-8.12% Notes Due 2024 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	55.0		55.0
Debt instrument maturity year	2024		2024
Debt instrument interest rate, minimum	7.63%		7.63%
Debt instrument interest rate, maximum	8.12%		8.12%
Notes Payable, Other Payables [Member] | Notes Issued In Dec 2007 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	250.0
Weighted average fixed rate	6.25%
Notes Payable, Other Payables [Member] | Notes Issued In July 2011 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	250.0
Weighted average fixed rate	4.01%
Notes Payable, Other Payables [Member] | Interest Rate Swap [Member] | 5.20% Notes Due 2015 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 100.0

[1] Interest rate swaps, settled upon the issuance of these notes in 2013, effectively fixed the interest rate on the $250 million notes at a weighted-average fixed rate of 3.30%.

[2] The fixed interest rate on $100 million of the 5.20% notes due in 2015 is effectively converted to a variable rate by interest rate swaps through 2015. Net interest payments are based on 3 month LIBOR minus 0.05% during this period (our effective rate as of November 30, 2014 was 0.19%).

[3] Interest rate swaps, settled upon the issuance of these notes in 2007, effectively fixed the interest rate on the $250 million notes at a weighted-average fixed rate of 6.25%.

[4] Interest rate swaps, settled upon the issuance of these notes in 2011, effectively fixed the interest rate on the $250 million notes at a weighted-average fixed rate of 4.01%.