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Segment Information | 3 Months Ended
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Mar. 31, 2017
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |
Segment Information | Segment Information Our business consists of three operating segments: (1) Floaters, which includes our drillships and semisubmersible rigs, (2) Jackups and (3) Other, which consists of management services on rigs owned by third-parties. Our two reportable segments, Floaters and Jackups, provide one service, contract drilling. Segment information for the quarters ended March 31, 2017 and 2016 is presented below (in millions). General and administrative expense and depreciation expense incurred by our corporate office are not allocated to our operating segments for purposes of measuring segment operating income and were included in "Reconciling Items." We measure segment assets as property and equipment. Three Months Ended March 31, 2017
| Floaters |  | Jackups |  | Other |  | Operating Segments Total |  | Reconciling Items |  | Consolidated Total
Revenues | $ | 284.8 |  |  | $ | 171.8 |  |  | $ | 14.5 |  |  | $ | 471.1 |  |  | $ | — |  |  | $ | 471.1 |
Operating expenses |  |  |  |  |  |  |  |  |  |  |
Contract drilling (exclusive of depreciation) | 146.4 |  |  | 118.6 |  |  | 13.1 |  |  | 278.1 |  |  | — |  |  | 278.1 |
Depreciation | 72.8 |  |  | 32.1 |  |  | — |  |  | 104.9 |  |  | 4.3 |  |  | 109.2 |
General and administrative | — |  |  | — |  |  | — |  |  | — |  |  | 26.0 |  |  | 26.0 |
Operating income | $ | 65.6 |  |  | $ | 21.1 |  |  | $ | 1.4 |  |  | $ | 88.1 |  |  | $ | (30.3 | ) |  | $ | 57.8 |
Property and equipment, net | $ | 8,534.3 |  |  | $ | 2,532.4 |  |  | $ | — |  |  | $ | 11,066.7 |  |  | $ | 54.0 |  |  | $ | 11,120.7 |
Three Months Ended March 31, 2016
| Floaters |  | Jackups |  | Other |  | Operating Segments Total |  | Reconciling Items |  | Consolidated Total
Revenues | $ | 512.6 |  |  | $ | 277.9 |  |  | $ | 23.5 |  |  | $ | 814.0 |  |  | $ | — |  |  | $ | 814.0 |
Operating expenses |  |  |  |  |  |  |  |  |  |  |
Contract drilling (exclusive of depreciation) | 211.3 |  |  | 134.5 |  |  | 17.9 |  |  | 363.7 |  |  | — |  |  | 363.7 |
Depreciation | 80.3 |  |  | 28.6 |  |  | — |  |  | 108.9 |  |  | 4.4 |  |  | 113.3 |
General and administrative | — |  |  | — |  |  | — |  |  | — |  |  | 23.4 |  |  | 23.4 |
Operating income | $ | 221.0 |  |  | $ | 114.8 |  |  | $ | 5.6 |  |  | $ | 341.4 |  |  | $ | (27.8 | ) |  | $ | 313.6 |
Property and equipment, net | $ | 8,480.6 |  |  | $ | 2,549.8 |  |  | $ | — |  |  | $ | 11,030.4 |  |  | $ | 66.7 |  |  | $ | 11,097.1 |
Information about Geographic Areas As of March 31, 2017, the geographic distribution of our drilling rigs by reportable segment was as follows:
| Floaters |  | Jackups |  | Total(1)
North & South America | 8 |  | 5 |  | 13
Europe & Mediterranean | 6 |  | 11 |  | 17
Middle East & Africa | 1 |  | 11 |  | 12
Asia & Pacific Rim | 4 |  | 6 |  | 10
Asia & Pacific Rim (under construction) | 1 |  | 1 |  | 2
Held-for-Sale | 1 |  | 4 |  | 5
Total | 21 |  | 38 |  | 59
(1) | We provide management services on two rigs owned by third-parties in the Gulf of Mexico and not included in the table above.

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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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&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=68060357&loc=d3e8906-108599 + Details
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