Financing Arrangements (Components Of Outstanding Debt) (Details) - USD ($) $ in Millions	9 Months Ended
	Aug. 31, 2017	Nov. 30, 2016	Aug. 31, 2016
Schedule of Short Term and Long Term Debt [Line Items]
Commercial paper	$ 314.0	$ 356.9	$ 528.1
Other	35.2	33.4	31.2
Short-term borrowings, total	$ 349.2	$ 390.3	$ 559.3
Weighted-average interest rate of short-term borrowings at end of period	2.00%	1.40%	0.70%
Other	$ 7.6	$ 11.1	$ 5.2
Unamortized discounts, premiums, debt issuance costs and fair value adjustments	(34.8)	(9.2)	(2.9)
Long-term debt	5,027.8	1,056.9	1,057.3
Less current portion	(325.5)	(2.9)	(0.6)
Long-term debt, total	4,702.3	1,054.0	1,056.7
3.25% Notes Due 2025
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	100.0
Interest Rate Swap | Notes Issued In Dec 2007
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 250.0
Weighted average fixed rate	6.25%
Interest Rate Swap | Notes Issued In July 2011
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 250.0
Weighted average fixed rate	4.01%
Interest Rate Swap | Notes Issued In August 2013
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 250.0
Weighted average fixed rate	3.30%
Interest Rate Swap | Notes Issued In 2015
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 250.0
Weighted average fixed rate	3.45%
Interest Rate Swap | Notes Issued In 2017
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 750.0
Weighted average fixed rate	3.44%
Notes Payable, Other Payables
Schedule of Short Term and Long Term Debt [Line Items]
Stated Note interest rate	3.40%
Basis spread on variable rate (percent)	1.22%
Debt Instrument, effective interest rate	2.53%
Notes Payable, Other Payables | 5.75% Notes Due 2017
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 250.0	250.0	250.0
Stated Note interest rate	5.75%
Notes Payable, Other Payables | 3.90% Notes Due 2021
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 250.0	250.0	250.0
Stated Note interest rate	3.90%
Notes Payable, Other Payables | 2.70% Notes Due 2022
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 750.0
Stated Note interest rate	2.70%
Notes Payable, Other Payables | 3.50% Notes Due 2023
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 250.0	250.0	250.0
Stated Note interest rate	3.50%
Notes Payable, Other Payables | 3.15% Notes Due 2024
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 700.0
Stated Note interest rate	3.15%
Notes Payable, Other Payables | 3.25% Notes Due 2025
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 250.0	250.0	250.0
Stated Note interest rate	3.25%
Notes Payable, Other Payables | 3.40% Notes Due 2027
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 750.0
Stated Note interest rate	3.40%
Notes Payable, Other Payables | 4.20% Notes Due 2047
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 300.0
Stated Note interest rate	4.20%
Notes Payable, Other Payables | 7.63%-8.12% Notes Due 2024
Schedule of Short Term and Long Term Debt [Line Items]
Notes outstanding	$ 55.0	$ 55.0	$ 55.0
Bridge Loan | Term Loan Due 2020
Schedule of Short Term and Long Term Debt [Line Items]
Long-term debt	750.0
Bridge Loan | Term Loan Due Two Thousand Twenty Two
Schedule of Short Term and Long Term Debt [Line Items]
Long-term debt	$ 750.0
Stated Note interest rate	2.70%
Minimum | Notes Payable, Other Payables
Schedule of Short Term and Long Term Debt [Line Items]
Stated Note interest rate	7.63%
Maximum | Notes Payable, Other Payables
Schedule of Short Term and Long Term Debt [Line Items]
Stated Note interest rate	8.12%