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33. Supplemental cash flow information | 12 Months Ended
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Dec. 31, 2018
Supplemental Cash Flow Information |
Supplemental cash flow information |
| 2018 | 2017 | 2016
Total additions of contract assets (Note 14) | 3,188,943 | - | -
Total additions to intangible assets (Note 15 (b)) | 1,144,728 | 3,490,298 | 3,855,831
Items not affecting cash (see breakdown below) | (2,201,112) | (1,532,518) | (1,747,664)
Total additions to intangible assets as per statement of cash flows | 2,132,559 | 1,957,780 | 2,108,167
Investment and financing operations affecting intangible assets but not cash: |  |  |
Interest capitalized in the year (Note 15 (d)) | 488,502 | 649,048 | 700,743
Contractors payable | 297,872 | 213,340 | 57,431
Program contract commitments | 149,974 | 95,126 | 4,262
Public Private Partnership - São Lourenço PPP (Note 15 (g)) | 273,737 | 501,591 | 893,181
Leases | - | 3,078 | 10,534
Construction margin (Note 26) | 63,013 | 70,335 | 81,513
Agreement signed with the municipality of Guarulhos (Note 9 (a)) | 928,014 | - | -
Total | 2,201,112 | 1,532,518 | 1,747,664

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