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v3.5.0.2

Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
May 31, 2016 | May 31, 2015 | May 31, 2014
Revenue: |  |  |  |  |
Service revenue | $ 2,905.8 |  | $ 2,697.5 |  | $ 2,478.2
Interest on funds held for clients | 46.1 |  | 42.1 |  | 40.7
Total revenue | 2,951.9 |  | 2,739.6 |  | 2,518.9
Expenses: |  |  |  |  |
Operating expenses | 857.1 |  | 808.0 |  | 732.5
Selling, general and administrative expenses | 948.2 |  | 878.0 |  | 803.7
Total expenses | 1,805.3 |  | 1,686.0 |  | 1,536.2
Operating income | 1,146.6 |  | 1,053.6 |  | 982.7
Investment income, net | 4.5 |  | 6.4 |  | 5.4
Income before income taxes | 1,151.1 |  | 1,060.0 |  | 988.1
Income taxes | 394.3 |  | 385.1 |  | 360.6
Net income | 756.8 |  | 674.9 |  | 627.5
Other comprehensive income/(loss), net of tax: |  |  |  |  |
Unrealized gains/(losses) on securities, net of tax | 21.7 |  | (14.0) |  | (0.5)
Total other comprehensive income/(loss), net of tax | 21.7 |  | (14.0) |  | (0.5)
Comprehensive income | $ 778.5 |  | $ 660.9 |  | $ 627.0
Basic earnings per share | $ 2.10 | [1] | $ 1.86 | [1] | $ 1.72
Diluted earnings per share | $ 2.09 | [1] | $ 1.85 | [1] | $ 1.71
Weighted-average common shares outstanding | 360.7 |  | 362.9 |  | 364.5
Weighted-average common shares outstanding, assuming dilution | 362.5 |  | 364.6 |  | 366.1
Cash dividends per common share | $ 1.68 |  | $ 1.52 |  | $ 1.40
[1] | Each quarter is a discrete period and the sum of the four quarters' basic and diluted earnings per share amounts may not equal the full year amount.

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- Definition Aggregate dividends paid 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 after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831223 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 + Details
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