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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Schedule of future minimum lease payments for leases | Estimated minimum future lease payments (excluding common area maintenance charges) include payments for certain renewal periods at our option because failure to renew results in an economic disincentive due to significant capital expenditure costs (e.g., racking structures), thereby making it reasonably assured that we will renew the lease. Such payments in effect at December 31, are as follows:
Year |  | Operating Lease Payments |  | Sublease Income |  | Capital Leases
2019 |  | $ | 323,454 |  |  | $ | (7,525 | ) |  | $ | 80,513 |
2020 |  | 293,276 |  |  | (7,200 | ) |  | 71,335 |
2021 |  | 267,379 |  |  | (7,063 | ) |  | 61,269 |
2022 |  | 246,128 |  |  | (6,694 | ) |  | 52,832 |
2023 |  | 221,808 |  |  | (6,409 | ) |  | 44,722 |
Thereafter |  | 1,287,807 |  |  | (6,279 | ) |  | 377,750 |
Total minimum lease payments |  | $ | 2,639,852 |  |  | $ | (41,170 | ) |  | 688,421 |
Less amounts representing interest |  |  |  |  |  |  |  | (241,248 | )
Present value of capital lease obligations |  |  |  |  |  |  |  | $ | 447,173 |
Contractual obligations related to purchase commitments | In addition, we have certain contractual obligations related to purchase commitments which require minimum payments as follows:
Year |  | Purchase Commitments(1)
2019 |  | $ | 232,880 |
2020 |  | 48,436 |
2021 |  | 40,112 |
2022 |  | 20,042 |
2023 |  | 2,196 |
Thereafter |  | 1,876 |
|  | $ | 345,542 |
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(1) | Purchase commitments include obligations for future construction costs associated with the expansion of our data center business which represent a substantial portion of the amount of purchase commitments due in 2019.

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- Definition Disclosure of contractual obligations related to purchase commitments which require minimum payments in future years + References No definition available. + Details
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- Definition Tabular disclosure of future minimum lease payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years, of operating lease payments, sublease income and capital leases, with separate deductions from the total of capital leases, included in the minimum lease payments and for the amount of the imputed interest necessary to reduce the net minimum lease payments to present value. + References No definition available. + Details
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