Financing Arrangements (Components Of Outstanding Debt) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Nov. 30, 2012		Nov. 30, 2011
Schedule of Short Term and Long Term Debt [Line Items]
Commercial paper	$ 138.4		$ 216.0
Other	1.9		1.0
Short-term borrowings, total	140.3		217.0
Weighted-average interest rate of short-term borrowings at year-end	0.40%		0.20%
Other	13.6		15.8
Unamortized discounts and fair value adjustments	12.9		14.3
Long-term debt	1,031.5		1,035.1
Less current portion	252.3		5.4
Long-term debt, total	779.2		1,029.7
3.90% Notes Due 2021 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding			250.0
Debt instrument interest rate			3.90%
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	[1]	250.0	[1]
Debt instrument interest rate	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%
Debt instrument maturity year	2015
Net interest payments, percentage below LIBOR	0.05%
Debt Instrument, effective interest rate	0.34%
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%
Debt instrument maturity year	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%
Debt instrument maturity year	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
Debt instrument interest rate, minimum	7.63%
Debt instrument interest rate, maximum	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 September 2008 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	250.0
Weighted average fixed rate	5.54%
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] (1)Interest rate swaps, settled upon the issuance of these notes in 2008, effectively fixed the interest rate on the $250 million notes at a weighted- average fixed rate of 5.54%.

[2] (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, 2012 was 0.34%).

[3] (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] (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%.