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Operating Segments, Geographic Analysis and Major Customers | 12 Months Ended
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Dec. 31, 2016
Operating Segments, Geographic Analysis and Major Customers |
Operating Segments, Geographic Analysis and Major Customers | Note 21—Operating Segments, Geographic Analysis and Major Customers Operating segments—We operate in a single, global market for the provision of contract drilling services to our customers. The location of our rigs and the allocation of our resources to build or upgrade rigs are determined by the activities and needs of our customers. Geographic analysis—Operating revenues by country were as follows (in millions):
|  | Years ended December 31, |
|  | 2016 |  | 2015 |  | 2014 |
Operating revenues |  |  |  |  |  |  |  |  |  |
U.S. |  | $ | 1,977 |  | $ | 2,416 |  | $ | 2,410 |
U.K. |  |  | 551 |  |  | 1,139 |  |  | 1,194 |
Brazil |  |  | 453 |  |  | 673 |  |  | 651 |
Norway |  |  | 214 |  |  | 650 |  |  | 1,036 |
Other countries (a) |  |  | 966 |  |  | 2,508 |  |  | 3,894 |
Total operating revenues |  | $ | 4,161 |  | $ | 7,386 |  | $ | 9,185 |
| (a) |  | Other countries represent countries in which we operate that individually had operating revenues representing less than 10 percent of total operating revenues earned.
Long‑lived assets by country were as follows (in millions):
|  | December 31, |
|  | 2016 |  | 2015 |
Long-lived assets |  |  |  |  |  |  |
U.S. |  | $ | 6,181 |  | $ | 7,451 |
Trinidad |  |  | 3,977 |  |  | 1,766 |
Korea |  |  | 1,459 |  |  | 2,048 |
Other countries (a) |  |  | 9,476 |  |  | 9,544 |
Total long-lived assets |  | $ | 21,093 |  | $ | 20,809 |
| (a) |  | Other countries represents countries in which we operate that individually had long‑lived assets representing less than 10 percent of total long‑lived assets.
A substantial portion of our assets are mobile. Asset locations at the end of the period are not necessarily indicative of the geographic distribution of the revenues generated by such assets during the periods. Although we are organized under the laws of Switzerland, we do not conduct any operations and do not have operating revenues in Switzerland. At December 31, 2016 and 2015, the aggregate carrying amount of our long‑lived assets located in Switzerland was $2 million. Our international operations are subject to certain political and other uncertainties, including risks of war and civil disturbances or other market disrupting events, expropriation of equipment, repatriation of income or capital, taxation policies, and the general hazards associated with certain areas in which we operate. Major customers—For the year ended December 31, 2016, Chevron Corporation (together with its affiliates, “Chevron”), BP, Royal Dutch Shell plc (together with its affiliates, “Shell”) and Petróleo Brasileiro S.A. (“Petrobras”), accounted for approximately 24 percent, 12 percent, 12 percent and 11 percent, respectively, of our consolidated operating revenues. For the year ended December 31, 2015, Chevron and Shell accounted for approximately 14 percent and 10 percent, respectively, of our consolidated operating revenues from continuing operations. For the year ended December 31, 2014, Chevron and BP accounted for approximately 11 percent and nine percent, respectively, of our consolidated operating revenues.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8981-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9038-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8971-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8595-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8984-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9031-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8538-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8864-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8924-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8906-108599 + Details
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