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Supplemental Information Relating to Oil and Natural Gas Producing Activities (Unaudited) Supplemental Information Relating to Oil and Natural Gas Producing Activities (Unaudited) (Tables) | 12 Months Ended
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Sep. 30, 2014
Extractive Industries [Abstract] |
Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure | Presented below are costs incurred in oil and natural gas property acquisition, exploration and development activities (in millions, except per unit amounts):
|  | Fiscal 2014 |  | Period from inception to September 30, 2013
Proved property acquisition costs |  | $ | — |  |  | $ | 569.5 |
Unproved property acquisition costs |  | — |  |  | 53.9 |
Total property acquisition costs |  | — |  |  | 623.4 |
Development |  | 11.4 |  |  | 11.8 |
Lease acquisitions and other |  | 0.2 |  |  | — |
Capitalized asset retirement costs |  | 0.1 |  |  | 0.1 |
Depletion per Boe |  | $ | 8.68 |  |  | $ | 10.00 |
Depletion per Mcfe |  | $ | 1.45 |  |  | $ | 1.67 |
Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities |
|  | Oil (Mbbls) |  | Natural Gas (Mmcf) |  | Natural Gas Liquids (Mbbls) |  | Natural Gas Equivalent (Mmcfe)
Inception |  |  |  |  |  |  |  |
Purchase of reserves in place (1) |  | 3,940 |  |  | 331,592 |  |  | 7,353 |  |  | 399,350 |
Discoveries and extensions (2) |  | 188 |  |  | 4,416 |  |  | 753 |  |  | 10,062 |
Revisions of previous estimates: |  |  |  |  |  |  |  |
Changes in price |  | (125 | ) |  | 13,116 |  |  | (135 | ) |  | 11,556 |
Other factors (3) |  | (296 | ) |  | (12,136 | ) |  | (1,941 | ) |  | (25,558 | )
Production |  | (283 | ) |  | (14,570 | ) |  | (300 | ) |  | (18,068 | )
September 30, 2013 |  | 3,424 |  |  | 322,418 |  |  | 5,730 |  |  | 377,342 |
Discoveries and extensions (2) |  | 112 |  |  | 839 |  |  | 173 |  |  | 2,549 |
Revisions of previous estimates: |  |  |  |  |  |  |  |
Changes in price |  | 233 |  |  | 20,815 |  |  | 496 |  |  | 25,189 |
Other factors (4) |  | 335 |  |  | (13,750 | ) |  | 342 |  |  | (9,688 | )
Production |  | (414 | ) |  | (20,882 | ) |  | (521 | ) |  | (26,492 | )
September 30, 2014 |  | 3,690 |  |  | 309,440 |  |  | 6,220 |  |  | 368,900 |
(1) | Purchases of reserves in place include the initial contribution of conventional assets from EXCO as of February 14, 2013, and the acquisition of shallow Cotton Valley assets from an affiliate of BG Group as of March 5, 2013.
(2) | New discoveries and extensions were a result of Compass’ development in the Permian basin for both Fiscal 2014 and the period from inception to September 30, 2013.
(3) | Revisions of previous estimates due to other factors were primarily due to downward adjustments in the Permian basin of 18.1 Bcfe as a result of recent performance and modifications to Compass’ development plans which extended the development beyond a five-year horizon. In addition, revisions of previous estimates due to other factors in the East Texas/North Louisiana region were 7.5 Bcfe primarily due to performance.
(4) | Revisions of previous estimates due to other factors were primarily due to downward adjustments in the East Texas/North Louisiana region of 11.5 Bcfe primarily due to recent performance.
Estimated Quantities of Proved Developed and Undeveloped Reserves
|  | Oil (Mbbls) |  | Natural Gas (Mmcf) |  | Natural Gas Liquids (Mbbls) |  | Mmcfe
Proved developed: |  |  |  |  |  |  |  |
September 30, 2014 |  | 3,356 |  |  | 304,628 |  |  | 5,145 |  |  | 355,634 |
September 30, 2013 |  | 3,107 |  |  | 317,748 |  |  | 4,799 |  |  | 365,185 |
Proved undeveloped: |  |  |  |  |  |  |  |
September 30, 2014 |  | 334 |  |  | 4,812 |  |  | 1,075 |  |  | 13,266 |
September 30, 2013 |  | 317 |  |  | 4,670 |  |  | 931 |  |  | 12,157 |
Standardized Measure of Discounted Future Cash Flows Relating to Proved Reserves Disclosure |
|  | September 30,
|  | 2014 |  | 2013
Future cash inflows |  | $ | 1,895.2 |  |  | $ | 1,638.5 |
Future production costs |  | 914.9 |  |  | 923.7 |
Future development costs |  | 164.4 |  |  | 156.0 |
Future income taxes |  | 136.2 |  |  | 39.3 |
Future net cash flows |  | 679.7 |  |  | 519.5 |
Discount of future net cash flows at 10% per annum |  | 333.9 |  |  | 217.2 |
Standardized measure of discounted future net cash flows |  | $ | 345.8 |  |  | $ | 302.3 |
Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows | The following are the principal sources of change in the Standardized Measure:
|  | Fiscal 2014 |  | Period from inception to September 30, 2013
Sales and transfers of oil and natural gas produced |  | $ | (77.4 | ) |  | $ | (46.2 | )
Net changes in prices and production costs |  | 141.8 |  |  | 39.2 |
Extensions and discoveries, net of future development and production costs |  | 3.5 |  |  | 8.1 |
Development costs during the period |  | 10.0 |  |  | 7.4 |
Changes in estimated future development costs |  | (12.0 | ) |  | 20.2 |
Revisions of previous quantity estimates |  | 24.2 |  |  | (50.2 | )
Purchase of reserves in place |  | — |  |  | 300.6 |
Accretion of discount before income taxes |  | 32.3 |  |  | 16.1 |
Changes in timing and other |  | (34.3 | ) |  | 27.9 |
Net change in income taxes |  | (44.6 | ) |  | (20.8 | )
Net change |  | $ | 43.5 |  |  | $ | 302.3 |
Schedule of Capitalized Costs of Unproved Properties Excluded from Amortization | The following table summarizes the categories of costs comprising the amount of unproved properties not subject to amortization by the period in which such costs were incurred. There are no individually significant properties or significant development projects included in costs not being amortized. The majority of the evaluation activities are expected to be completed within one to four years.
|  | Total |  | Fiscal 2014 |  | Period from inception to September 30, 2013
Property acquisition costs |  | $ | 18.9 |  |  | $ | — |  |  | $ | 18.9 |
Capitalized interest |  | 1.3 |  |  | 0.7 |  |  | 0.6 |
Total |  | $ | 20.2 |  |  | $ | 0.7 |  |  | $ | 19.5 |

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- Definition Tabular disclosure of the aggregate of costs (whether the costs are capitalized or charged to expense at the time they are incurred ) incurred for the year in oil and gas property acquisition, exploration and development activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 55 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=34713648&loc=d3e63042-109448 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62059-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62038-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62014-109447 + Details
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- Definition Tabular disclosure of the capitalized costs of unproved properties and major development projects that are excluded from capitalized costs being amortized. This includes the total costs excluded and, at a minimum, these categories of costs: acquisition costs, exploration costs, development costs in the case of significant development projects, and capitalized interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 3(ii)(A) -Article 4 + Details
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- Definition Tabular disclosure of the aggregate change in the standardized measure of discounted future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchases under long-term agreements in which the enterprise participates in the operation of the properties on which oil and gas is located or otherwise serves as the producer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 36 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62536-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62496-109447 + Details
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- Definition Tabular disclosure of the net quantities of an enterprise's interests in proved developed and undeveloped reserves of (a) crude oil (including condensate and natural gas liquids), (b) natural gas (including coal bed methane), (c) synthetic oil, (d) synthetic gas, and (e) other nonrenewable natural resources that are intended to be upgraded during the period as of the beginning of the period, changes in quantities during the period, and as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61858-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61797-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61869-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61884-109447 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61872-109447 + Details
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- Definition Tabular disclosure of the future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchase under long-term agreements in which the enterprise participates in the operation of the properties on which the oil and gas is located or otherwise serves as the producer. This information is presented in aggregate and for each geographic area for which reserve quantities are disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 36 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62536-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62479-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62424-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62455-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62476-109447 + Details
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