Financing Arrangements (Components Of Outstanding Debt) (Details) - USD ($) $ in Millions		12 Months Ended
		Nov. 30, 2016	Nov. 30, 2015
Schedule of Short Term and Long Term Debt [Line Items]
Commercial paper		$ 356.9	$ 107.5
Other		33.4	32.0
Short-term borrowings, total		$ 390.3	$ 139.5
Weighted-average interest rate of short-term borrowings at year-end		1.40%	2.20%
Other		$ 11.1	$ 7.4
Unamortized discounts and fair value adjustments		(9.2)	(7.5)
Long-term debt		1,056.9	1,254.9
Less current portion		(2.9)	(203.5)
Long-term debt, total		1,054.0	1,051.4
3.25% Notes Due 2025 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding		$ 250.0
Stated Note interest rate		3.25%
Notes Payable, Other Payables [Member] | 5.75% Notes Due 2017 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	[1]	$ 250.0	$ 250.0
Stated Note 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	[2]	$ 250.0	$ 250.0
Stated Note interest rate		3.90%	3.90%
Debt instrument maturity year		2021	2021
Notes Payable, Other Payables [Member] | 3.50% Notes Due 2023 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	[3]	$ 250.0	$ 250.0
Stated Note 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	[4]	$ 250.0	$ 250.0
Weighted average fixed rate		3.45%
Stated Note interest rate		3.25%
Debt Instrument, effective interest rate		2.13%
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
Stated Note interest rate			5.20%
Debt instrument maturity year			2015
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
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
Minimum [Member] | Notes Payable, Other Payables [Member] | 7.63%-8.12% Notes Due 2024 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Stated Note interest rate		7.63%	7.63%
Maximum [Member] | Notes Payable, Other Payables [Member] | 7.63%-8.12% Notes Due 2024 [Member]
Schedule of Short Term and Long Term Debt [Line Items]
Stated Note interest rate		8.12%	8.12%

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

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

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

[4] Interest rate swaps, settled upon the issuance of these notes in 2015, effectively set the interest rate on the $250 million notes at a weighted-average fixed rate of 3.45%. 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, 2016 was 2.13%).