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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
May 31, 2016 | May 31, 2015 | May 31, 2014
Cloud and on-premises software revenues |  |  |  |
Cloud software as a service and platform as a service |  | $ 2,207 | $ 1,485 | $ 1,121
Cloud infrastructure as a service |  | 646 | 608 | 456
Total cloud revenues |  | 2,853 | 2,093 | 1,577
New software licenses |  | 7,276 | 8,535 | 9,416
Software license updates and product support |  | 18,861 | 18,847 | 18,206
Total on-premise software revenues |  | 26,137 | 27,382 | 27,622
Total cloud and on-premise software revenues |  | 28,990 | 29,475 | 29,199
Hardware revenues: |  |  |  |
Hardware products |  | 2,471 | 2,825 | 2,976
Hardware support |  | 2,197 | 2,380 | 2,396
Total hardware revenues |  | 4,668 | 5,205 | 5,372
Total services revenues |  | 3,389 | 3,546 | 3,704
Total revenues |  | 37,047 | 38,226 | 38,275
Operating expenses: |  |  |  |
Sales and marketing | [1] | 7,884 | 7,655 | 7,567
Cloud software as a service and platform as a service | [1] | 1,152 | 773 | 455
Cloud infrastructure as a service | [1] | 366 | 344 | 308
Software license updates and product support | [1] | 1,146 | 1,199 | 1,162
Hardware products | [1] | 1,371 | 1,471 | 1,521
Hardware support | [1] | 693 | 816 | 836
Services | [1] | 2,751 | 2,929 | 2,954
Research and development |  | 5,787 | 5,524 | 5,151
General and administrative |  | 1,155 | 1,077 | 1,038
Amortization of intangible assets |  | 1,638 | 2,149 | 2,300
Acquisition related and other |  | 42 | 211 | 41
Restructuring |  | 458 | 207 | 183
Total operating expenses |  | 24,443 | 24,355 | 23,516
Operating income |  | 12,604 | 13,871 | 14,759
Interest expense |  | (1,467) | (1,143) | (914)
Non-operating income (expense), net |  | 305 | 106 | (141)
Income before provision for income taxes |  | 11,442 | 12,834 | 13,704
Provision for income taxes |  | 2,541 | 2,896 | 2,749
Net income |  | $ 8,901 | $ 9,938 | $ 10,955
Earnings per share: |  |  |  |
Basic (in dollars per share) |  | $ 2.11 | $ 2.26 | $ 2.42
Diluted (in dollars per share) |  | $ 2.07 | $ 2.21 | $ 2.38
Weighted average common shares outstanding: |  |  |  |
Basic (in shares) |  | 4,221 | 4,404 | 4,528
Diluted (in shares) |  | 4,305 | 4,503 | 4,604
Dividends declared per common share (in dollars per share) |  | $ 0.60 | $ 0.51 | $ 0.48
[1] | Exclusive of amortization of intangible assets, which is shown separately

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