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Commitments And Contingencies | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Commitments And Contingencies | COMMITMENTS AND CONTINGENCIES Leases We are obligated under leases for certain of our offices and equipment. Rental expense relating to operating leases was $40.1 million, $37.0 million and $39.7 million during the years ended December 31, 2018, 2017 and 2016, respectively. Future minimum rental payments under our noncancellable operating lease obligations are as follows: $32.3 million during 2019; $18.7 million during 2020; $11.9 million during 2021; $9.2 million during 2022; $8.9 million during 2023 and $15.2 million thereafter. Capital Commitments The following table summarizes the cumulative amount of contractual payments made as of December 31, 2018 for our rigs under construction and estimated timing of our remaining contractual payments (in millions):
|  | Cumulative Paid(1) |  | 2019 |  | 2020 |  | Thereafter |  | Total(2)
ENSCO 123(3) |  | $ | 276.4 |  |  | $ | 9.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 285.4 |
ENSCO DS-14(4) |  | 15.0 |  |  | — |  |  | 165.0 |  |  | — |  |  | 180.0 |
ENSCO DS-13(4) |  | — |  |  | 83.9 |  |  | — |  |  | — |  |  | 83.9 |
|  | $ | 291.4 |  |  | $ | 92.9 |  |  | $ | 165.0 |  |  | $ | — |  |  | $ | 549.3 |
(1) | Cumulative paid represents the aggregate amount of contractual payments made from commencement of the construction agreement through December 31, 2018. Contractual payments made by Atwood prior to the Atwood Merger for ENSCO DS-13 and ENSCO DS-14 are excluded.
(2) | Total commitments are based on fixed-price shipyard construction contracts, exclusive of our internal costs associated with project management, commissioning and systems integration testing. Total commitments also exclude holding costs and interest.
(3) | In January 2018, we made a milestone payment of $207.4 million. The remaining unpaid balance of $9.0 million is due upon delivery. The $207.4 million milestone payment was invoiced and included in accounts payable - trade as of December 31, 2017 on our consolidated balance sheet.
(4) | The remaining milestone payments for ENSCO DS-13 and ENSCO DS-14 bear interest at a rate of 4.5% per annum, which accrues during the holding period until delivery. Delivery is scheduled for September 2019 and June 2020 for ENSCO DS-13 and ENSCO DS-14, respectively. Upon delivery, the remaining milestone payments and accrued interest thereon may be financed through a promissory note with the shipyard for each rig. The promissory notes will bear interest at a rate of 5.0% per annum with a maturity date of December 30, 2022 and will be secured by a mortgage on each respective rig. The remaining milestone payments for ENSCO DS-13 and ENSCO DS-14 are included in the table above in the period in which we expect to take delivery of the rig. However, we may elect to execute the promissory notes and defer payment until December 2022.
The actual timing of these expenditures may vary based on the completion of various construction milestones, which are, to a large extent, beyond our control. DSA Dispute On January 4, 2016, Petrobras sent a notice to us declaring the drilling services agreement with Petrobras (the "DSA") for ENSCO DS-5, a drillship ordered from Samsung Heavy Industries, a shipyard in South Korea ("SHI"), void effective immediately, reserving its rights and stating its intention to seek any restitution to which it may be entitled. The previously disclosed arbitral hearing on liability related to the matter was held in March 2018. Prior to the arbitration tribunal issuing its decision, we and Petrobras agreed in August 2018 to a settlement of all claims relating to the DSA. No payments were made by either party in connection with the settlement agreement. The parties agreed to normalize business relations and the settlement agreement provides for our participation in current and future Petrobras tenders on the same basis as all other companies invited to these tenders. No losses were recognized during 2018 with respect to this settlement as all disputed receivables with Petrobras related to the DSA were fully reserved in 2015. See Item 3 “Legal Proceedings” in our quarterly report on Form 10-Q for the quarter ended June 30, 2018 for further information about the DSA dispute. In November 2016, we initiated separate arbitration proceedings in the U.K. against SHI for the losses incurred in connection with the foregoing Petrobras arbitration and certain other losses relating to the DSA. SHI subsequently filed a statement of defense disputing our claim. In January 2018, the arbitration tribunal for the SHI matter issued an award on liability fully in our favor. In August 2018, the tribunal awarded us approximately $2.8 million in costs and legal fees incurred to date, plus interest, which was collected during the fourth quarter. The January 2018 arbitration award provides that SHI is liable to us for $10 million or damages that we can prove. We have submitted to the tribunal our claim for damages. The arbitral hearing on damages owed to us by SHI is scheduled to take place in the first quarter of 2019. We are unable to estimate the ultimate outcome of recovery for damages at this time. Other Matters In addition to the foregoing, we are named defendants or parties in certain other lawsuits, claims or proceedings incidental to our business and are involved from time to time as parties to governmental investigations or proceedings, including matters related to taxation, arising in the ordinary course of business. Although the outcome of such lawsuits or other proceedings cannot be predicted with certainty and the amount of any liability that could arise with respect to such lawsuits or other proceedings cannot be predicted accurately, we do not expect these matters to have a material adverse effect on our financial position, operating results and cash flows. In the ordinary course of business with customers and others, we have entered into letters of credit to guarantee our performance as it relates to our drilling contracts, contract bidding, customs duties, tax appeals and other obligations in various jurisdictions. Letters of credit outstanding as of December 31, 2018 totaled $126.3 million and are issued under facilities provided by various banks and other financial institutions. Obligations under these letters of credit and surety bonds are not normally called, as we typically comply with the underlying performance requirement. As of December 31, 2018, we had not been required to make collateral deposits with respect to these agreements.

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