Financing Arrangements (Components Of Outstanding Debt) (Details) - USD ($) $ in Millions		12 Months Ended
		Nov. 30, 2015	Nov. 30, 2014
Schedule of Short Term and Long Term Debt [Line Items]
Commercial paper		$ 107.5	$ 239.4
Other		32.0	30.2
Short-term borrowings, total		$ 139.5	$ 269.6
Weighted-average interest rate of short-term borrowings at year-end		2.20%	1.30%
Other		$ 7.4	$ 8.5
Unamortized discounts and fair value adjustments		(6.2)	1.8
Long-term debt		1,256.2	1,015.3
Less current portion		(203.5)	(1.2)
Long-term debt, total		1,052.7	1,014.1
3.25% Notes Due 2025 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	[1]	$ 250.0
Debt instrument interest rate		3.25%
Notes Payable, Other Payables [Member] | 3.50% Notes Due 2023 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	[2]	$ 250.0	$ 250.0
Debt instrument interest rate		3.50%	3.50%
Debt instrument maturity year		2023	2023
Notes Payable, Other Payables [Member] | 3.25% Notes Due 2025 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	[1]	$ 250.0
Weighted average fixed rate		3.45%
Debt instrument interest rate	[2]	3.25%
Debt instrument maturity year	[2]	2025
Debt Instrument, effective interest rate		1.58%
Notes Payable, Other Payables [Member] | 5.20% Notes Due 2015 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	[3]	$ 200.0	$ 200.0
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		0.29%
Notes Payable, Other Payables [Member] | 5.75% Notes Due 2017 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	[4]	$ 250.0	$ 250.0
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	[5]	$ 250.0	$ 250.0
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	[1]	$ 100.0

[1] The fixed interest rate on $100 million of the 3.25% notes due in 2025 is effectively converted to a variable rate by interest rate swaps through 2025. Net interest payments are based on 3 month LIBOR plus 1.22% during this period (our effective rate as of November 30, 2015 was 1.58%). In addition, separate interest rate swaps, settled upon the issuance of these notes in 2015, effectively fixed the interest rate on the $250 million notes at a weighted-average fixed rate of 3.45%

[2] 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%.

[3] The fixed interest rate on $100 million of the 5.20% notes due in December 2015 was effectively converted to a variable rate by interest rate swaps through December 2015. Net interest payments were based on 3 month LIBOR minus 0.05% during this period (our effective rate as of November 30, 2015 was 0.29%).

[4] 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%.

[5] 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%.