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Drilling Fleet | 12 Months Ended
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Dec. 31, 2019
Drilling Fleet |
Drilling Fleet | Note 7—Drilling Fleet Construction work in progress—The changes in our construction work in progress, including capital expenditures and other capital additions, were as follows (in millions): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years ended December 31, |
​ |  | 2019 |  | 2018 |  | 2017 |
Construction work in progress, beginning of period | ​ | $ | 632 | ​ | $ | 1,392 | ​ | $ | 2,171 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Capital expenditures | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Newbuild construction program | ​ | ​ | 129 | ​ | ​ | 75 | ​ | ​ | 397 | ​
Other equipment and construction projects | ​ | ​ | 258 | ​ | ​ | 109 | ​ | ​ | 100 | ​
Total capital expenditures | ​ | ​ | 387 | ​ | ​ | 184 | ​ | ​ | 497 | ​
Changes in accrued capital additions | ​ | ​ | 20 | ​ | ​ | 4 | ​ | ​ | (23) | ​
Construction work in progress impaired | ​ | ​ | (5) | ​ | ​ | — | ​ | ​ | — | ​
Construction work in progress acquired in business combination | ​ | ​ | — | ​ | ​ | 28 | ​ | ​ | — | ​
Construction work in progress sold | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (289) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Property and equipment placed into service | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Newbuild construction program | ​ | ​ | — | ​ | ​ | (903) | ​ | ​ | (896) | ​
Other property and equipment | ​ | ​ | (281) | ​ | ​ | (73) | ​ | ​ | (68) | ​
Construction work in progress, end of period | ​ | $ | 753 | ​ | $ | 632 | ​ | $ | 1,392 | ​
​ Impairments of assets held and used—During the year ended December 31, 2017, we identified indicators that the asset groups in our contract drilling services reporting unit may not be recoverable. In the year ended December 31, 2017, such indicators included a significant decline in commodity prices and the market value of our stock, a reduction of projected dayrates and a further extension of low utilization rates. In the year ended December 31, 2017, as a result of our testing, we recognized a loss of $94 million ($93 million, or $0.25 per diluted share, net of tax) associated with the impairment of the midwater floater asset group. We measured the fair value of the asset groups by applying a combination of income and market approaches, using projected discounted cash flows and estimates of the exchange price that would be received for the assets in the principal or most advantageous markets for the assets in an orderly transaction between participants as of the measurement date. Our estimate of fair value required us to use significant unobservable inputs, representative of a Level 3 fair value measurement, including assumptions related to the future performance of our contract drilling services reporting unit, such as future commodity prices, projected demand for our services, rig availability and dayrates. Impairments of assets held for sale—In the year ended December 31, 2019, we recognized an aggregate loss of $578 million ($0.94 per diluted share), which had no tax effect, associated with the impairment of the ultra-deepwater floaters Discoverer Deep Seas, Discoverer Enterprise and Discoverer Spirit, along with related assets, which we determined were impaired at the time we classified the assets as held for sale. In the year ended December 31, 2018, we recognized an aggregate loss of $999 million ($2.13 per diluted share), which had no tax effect, associated with the impairment of the ultra-deepwater floaters Deepwater Discovery, Deepwater Frontier, Deepwater Millennium and GSF C.R. Luigs, the deepwater floaters Jack Bates and Transocean 706 and the midwater floaters Songa Delta and Songa Trym, along with related assets, which we determined were impaired at the time that we classified the assets as held for sale. In the year ended December 31, 2017, we recognized an aggregate loss of $1.4 billion ($3.59 per diluted share), which had no tax effect, associated with the impairment of the ultra-deepwater floaters Cajun Express, Deepwater Pathfinder, GSF Jack Ryan, Sedco Energy and Sedco Express, the deepwater floater Transocean Marianas and the midwater floaters Transocean Prospect and Transocean Searcher, along with related assets, which we determined were impaired at the time that we classified the assets as held for sale. We measured the impairment of the drilling units and related assets as the amount by which the carrying amount exceeded the estimated fair value less costs to sell. We estimated the fair value of the assets using significant other observable inputs, representative of Level 2 fair value measurements, including indicative market values for the drilling units and related assets to be sold for scrap value or binding contracts to sell such assets for alternative purposes. If we commit to plans to sell additional rigs for values below the respective carrying amounts, we will be required to recognize additional losses in future periods associated with the impairment of such assets. Dispositions—During the year ended December 31, 2019, in connection with our efforts to dispose of non-strategic assets, we completed the sale of the ultra-deepwater floaters Deepwater Frontier, Deepwater Millennium, Discoverer Deep Seas, Discoverer Enterprise, Discoverer Spirit and Ocean Rig Paros, the harsh environment floater Eirik Raude, the deepwater floaters Jack Bates and Transocean 706 and the midwater floaters Actinia and Songa Delta, along with related assets. In the year ended December 31, 2019, we received aggregate net cash proceeds of $64 million and recognized an aggregate net gain of $4 million, which had no tax effect, associated with the disposal of these assets. In the year ended December 31, 2019, we received aggregate net cash proceeds of $6 million and recognized an aggregate net loss of $16 million associated with the disposal of assets unrelated to rig sales. During the year ended December 31, 2018, we completed the sale of the ultra-deepwater floaters Cajun Express, Deepwater Discovery, Deepwater Pathfinder, GSF C.R. Luigs, Sedco Energy and Sedco Express, the deepwater floater Transocean Marianas and the midwater floater Songa Trym, along with related assets. In the year ended December 31, 2018, we received aggregate net cash proceeds of $36 million and recognized an aggregate net gain of $7 million ($0.01 per diluted share), which had no tax effect, associated with the disposal of these assets. In the year ended December 31, 2018, we received aggregate net cash proceeds of $7 million and recognized an aggregate net loss of $7 million associated with the disposal of assets unrelated to rig sales. On May 31, 2017, we completed the sale of 10 high-specification jackups, including GSF Constellation I, GSF Constellation II, GSF Galaxy I, GSF Galaxy II, GSF Galaxy III, GSF Monarch, Transocean Andaman, Transocean Ao Thai, Transocean Honor and Transocean Siam Driller, along with related assets, and novated the contracts relating to the construction of five high-specification jackups, together with related assets. In the year ended December 31, 2017, we received aggregate net cash proceeds of $319 million and recognized an aggregate net loss of $1.6 billion ($4.08 per diluted share), which had no tax effect, associated with the disposal of these assets. Following the completion of the sale, we continued to operate three of these high-specification jackups through completion of the drilling contracts, the last of which was completed in October 2018. In the years ended December 31, 2018 and 2017, excluding our loss on the disposal of these assets, our operating results included income of $44 million and $65 million, respectively, before taxes, associated with the high-specification jackup asset group. During the year ended December 31, 2017, we also completed the sale of the ultra-deepwater floater GSF Jack Ryan and the midwater floaters GSF Rig 140, Transocean Prospect and Transocean Searcher, along with related assets. In the year ended December 31, 2017, we received aggregate net cash proceeds of $22 million and recognized an aggregate net gain of $9 million ($0.01 per diluted share), which had no tax effect, associated with the disposal of these assets. In the year ended December 31, 2017, we received aggregate net cash proceeds of $9 million and recognized an aggregate net loss of $15 million associated with the disposal of assets unrelated to rig sales. Assets held for sale—At December 31, 2018, the aggregate carrying amount of our assets held for sale, including the ultra-deepwater floaters Deepwater Frontier and Deepwater Millennium, the deepwater floaters Jack Bates and Transocean 706 and the midwater floater Songa Delta, along with related assets, was $25 million, recorded in other current assets.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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