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Shareholders' Equity - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
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Nov. 30, 2017 | Aug. 31, 2017 | May 31, 2017 | Feb. 28, 2017 | Nov. 30, 2016 | Aug. 31, 2016 | May 31, 2016 | Feb. 29, 2016 | Nov. 30, 2015 | Aug. 31, 2015 | May 31, 2015 | Feb. 28, 2015 | Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015
Equity [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared per share (USD per share) | $ 0.45 | $ 0.4 | $ 0.40 | $ 0.35 | $ 0.35 | $ 0.35 | $ 0.35 | $ 0.30 | $ 0.30 | $ 0.30 | $ 0.25 | $ 0.25 | $ 1.6 | $ 1.35 | $ 1.10
Dividends declared | $ 324 | $ 289 | $ 291 | $ 251 | $ 254 | $ 256 | $ 261 | $ 225 | $ 233 | $ 234 | $ 194 | $ 194 |  |  |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
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- References No definition available. + Details
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