XML 110 R84.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Significant Event (Details) - $ / shares |  | 12 Months Ended
--- | --- | ---
Feb. 20, 2018 | Jan. 31, 2018 | Jan. 31, 2017 | Jan. 31, 2016
Subsequent Event [Line Items] |  |  |  |
Dividends declared per common share |  | $ 2.04 | $ 2.00 | $ 1.96
Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Dividends declared per common share | $ 2.08 |  |  |
Common stock, quarterly dividends, per share, declared | $ 0.52 |  |  |

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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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Balance Type: | na
Period Type: | duration

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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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Balance Type: | na
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Period Type: |