Table:
|  |  |  | Payments due by period |  |  |
| --- | --- | --- | --- | --- | --- |
| Contractual Cash Obligations (1) | Total | Less than 1 year | 1-3 years | 3-5 years | More than 5 years |
|  |  |  | (in millions of U.S. dollars) |  |  |
| Long-term debt | $23 | $6 | $11 | $6 |  |
| Operating leases | 3,840 | 688 | 1,114 | 792 | 1,246 |
| Retirement obligations (2) | 95 | 10 | 20 | 20 | 44 |
| Purchase obligations and other commitments (3) | 286 | 206 | 61 | 12 | 6 |
| Total | $4,244 | $910 | $1,206 | $830 | $1,296 |
Paragraphs:
Obligations and Commitments
As of August 31, 2019, we had the following obligations and commitments to make future payments under contracts, contractual obligations and commercial commitments:
Amounts in table may not total due to rounding.
The liability related to unrecognized tax benefits has been excluded from the contractual obligations table because a reasonable estimate of the timing and amount of cash outflows from future tax settlements cannot be determined. For additional information, see Note 10 (Income Taxes) to our Consolidated Financial Statements under Item 8, “Financial Statements and Supplementary Data.”
Amounts represent projected payments under certain unfunded retirement plans for former pre-incorporation partners. Given these plans are unfunded, we pay these benefits directly. These plans were eliminated for active partners after May 15, 2001
Other commitments include, among other things, information technology, software support and maintenance obligations, as well as other obligations in the ordinary course of business that we cannot cancel or where we would be required to pay a termination fee in the event of cancellation. Amounts shown do not include recourse that we may have to recover termination fees or penalties from clients.
Question:
What is the proportion of the company's total long term debt as a ratio of its total contractual cash obligations?
Answer: (23/4244) = 0.54