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Business Segments (Tables) | 12 Months Ended
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Dec. 31, 2017
Business Segments [Abstract] |
Segment Information |
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﻿Segment Information | Exploration and Production |
﻿(Millions of dollars) | United States |  | Canada 1 |  | Malaysia |  | Other |  | Total E&P |
﻿Year ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
﻿Segment income (loss) | $ | (2.6) |  | 112.5 |  | 224.2 |  | (37.5) |  | 296.6 |
﻿Revenues from external customers |  | 953.9 |  | 485.5 |  | 781.1 |  | – |  | 2,220.5 | 2
﻿Interest income |  | – |  | – |  | – |  | – |  | – |
﻿Interest expense, net of capitalization |  | – |  | – |  | – |  | – |  | – |
﻿Income tax expense (benefit) |  | 2.5 |  | 44.4 |  | 126.4 |  | (36.2) |  | 137.1 |
﻿Significant noncash charges (credits) |  |  |  |  |  |  |  |  |  |  |
﻿ Depreciation, depletion and amortization |  | 546.1 |  | 185.4 |  | 204.6 |  | 3.8 |  | 939.9 |
﻿ Accretion of asset retirement obligations |  | 17.4 |  | 7.9 |  | 17.3 |  | – |  | 42.6 |
﻿ Amortization of undeveloped leases |  | 60.2 |  | 1.6 |  | – |  | – |  | 61.8 |
﻿ Deferred and noncurrent income taxes |  | 2.5 |  | 55.3 |  | (3.7) |  | (36.2) |  | 17.9 |
﻿Additions to property, plant, equipment |  | 534.8 |  | 267.6 |  | 16.0 |  | 37.6 |  | 856.0 |
﻿Total assets at year-end |  | 5,186.2 |  | 1,725.8 |  | 1,670.1 |  | 154.2 |  | 8,736.3 |
﻿Year ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
﻿Segment income (loss) | $ | (205.4) |  | (35.9) |  | 171.1 |  | (54.7) |  | (124.9) |
﻿Revenues from external customers |  | 685.7 |  | 365.3 |  | 753.4 |  | 0.2 |  | 1,804.6 |
﻿Interest income |  | – |  | – |  | – |  | – |  | – |
﻿Interest expense, net of capitalization |  | – |  | – |  | – |  | – |  | – |
﻿Income tax expense (benefit) |  | (87.9) |  | (134.3) |  | 85.9 |  | (18.8) |  | (155.1) |
﻿Significant noncash charges (credits) |  |  |  |  |  |  |  |  |  |  |
﻿ Depreciation, depletion and amortization |  | 600.5 |  | 203.2 |  | 227.7 |  | 5.9 |  | 1,037.3 |
﻿ Accretion of asset retirement obligations |  | 17.1 |  | 13.3 |  | 16.3 |  | – |  | 46.7 |
﻿ Amortization of undeveloped leases |  | 38.4 |  | 4.5 |  | – |  | 0.5 |  | 43.4 |
﻿ Impairment of assets |  | – |  | 95.1 |  | – |  | – |  | 95.1 |
﻿ Deferred and noncurrent income taxes |  | (108.4) |  | (175.8) |  | (8.5) |  | (18.3) |  | (311.0) |
﻿Additions to property, plant, equipment |  | 269.8 |  | 361.3 |  | 101.4 |  | (1.3) |  | 731.2 |
﻿Total assets at year-end |  | 5,419.0 |  | 1,559.5 |  | 2,024.7 |  | 115.7 |  | 9,118.9 |
﻿Year ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |
﻿Segment loss | $ | (615.7) |  | (583.4) |  | (653.2) |  | (158.6) |  | (2,010.9) |
﻿Revenues from external customers |  | 1,253.6 |  | 549.7 |  | 1,131.4 |  | – |  | 2,934.7 |
﻿Interest income |  | – |  | – |  | – |  | – |  | – |
﻿Interest expense, net of capitalization |  | – |  | – |  | – |  | – |  | – |
﻿Income tax expense (benefit) |  | (337.0) |  | (188.8) |  | (567.9) |  | (17.3) |  | (1,111.0) |
﻿Significant noncash charges (credits) |  |  |  |  |  |  |  |  |  |  |
﻿ Depreciation, depletion and amortization |  | 794.9 |  | 261.9 |  | 544.9 |  | 6.2 |  | 1,607.9 |
﻿ Accretion of asset retirement obligations |  | 20.2 |  | 12.6 |  | 15.9 |  | – |  | 48.7 |
﻿ Amortization of undeveloped leases |  | 59.2 |  | 14.4 |  | – |  | 1.8 |  | 75.4 |
﻿ Impairment of assets |  | 329.0 |  | 683.6 |  | 1,480.6 |  | – |  | 2,493.2 |
﻿ Deferred and noncurrent income taxes |  | (187.7) |  | (146.0) |  | (579.2) |  | (4.6) |  | (917.5) |
﻿Additions to property, plant, equipment |  | 1,263.1 |  | 184.9 |  | 244.4 |  | 39.2 |  | 1,731.6 |
﻿Total assets at year-end |  | 5,717.8 |  | 2,460.6 |  | 2,537.2 |  | 147.7 |  | 10,863.3 |
﻿ 1 Includes Synthetic crude operations in 2016 and 2015. This business was sold in June 2016. 2 Includes a pretax gain of $129.0 million on sale of Seal area heavy oil field sold in January 2017.
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﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿Geographic Information | Certain Long-Lived Assets at December 31
﻿(Millions of dollars) | United States |  | Canada |  | Malaysia |  | United Kingdom |  | Other |  | Total
﻿2017 | $ | 5,050.5 |  | 1,635.9 |  | 1,392.3 |  | – |  | 141.3 |  | 8,220.0
﻿2016 |  | 5,121.6 |  | 1,451.4 |  | 1,637.0 |  | – |  | 106.2 |  | 8,316.2
﻿2015 |  | 5,484.7 |  | 2,310.6 |  | 1,912.0 |  | – |  | 111.1 |  | 9,818.4
﻿ ﻿
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﻿ |  |  |  |  |  |
﻿Segment Information — Continued |
﻿(Millions of dollars) | Corporate and Other |  | Discontinued Operations |  | Consolidated Total
﻿Year ended December 31, 2017 |  |  |  |  |  |
﻿Segment income (loss) | $ | (607.5) |  | (0.9) |  | (311.8)
﻿Revenues from external customers |  | 4.6 |  | – |  | 2,225.1
﻿Interest income |  | 7.4 |  | – |  | 7.4
﻿Interest expense, net of capitalization |  | 181.8 |  | – |  | 181.8
﻿Income tax expense (benefit) |  | 245.6 |  | – |  | 382.7
﻿Significant noncash charges (credits) |  |  |  |  |  |
﻿ Depreciation, depletion and amortization |  | 17.8 |  | – |  | 957.7
﻿ Accretion of asset retirement obligations |  | – |  | – |  | 42.6
﻿ Amortization of undeveloped leases |  | – |  | – |  | 61.8
﻿ Deferred and noncurrent income taxes |  | 242.5 |  | – |  | 260.4
﻿Additions to property, plant, equipment |  | 14.8 |  | – |  | 870.8
﻿Total assets at year-end |  | 1,101.7 |  | 22.9 |  | 9,860.9
﻿Year ended December 31, 2016 |  |  |  |  |  |
﻿Segment income (loss) | $ | (149.1) |  | (2.0) |  | (276.0)
﻿Revenues from external customers |  | 6.6 |  | – |  | 1,811.2
﻿Interest income |  | 2.9 |  | – |  | 2.9
﻿Interest expense, net of capitalization |  | 148.2 |  | – |  | 148.2
﻿Income tax expense (benefit) |  | (64.1) |  | – |  | (219.2)
﻿Significant noncash charges (credits) |  |  |  |  |  |
﻿ Depreciation, depletion and amortization |  | 16.8 |  | – |  | 1,054.1
﻿ Accretion of asset retirement obligations |  | – |  | – |  | 46.7
﻿ Amortization of undeveloped leases |  | – |  | – |  | 43.4
﻿ Impairment of assets |  | – |  | – |  | 95.1
﻿ Deferred and noncurrent income taxes |  | (76.8) |  | – |  | (387.8)
﻿Additions to property, plant, equipment |  | 21.9 |  | – |  | 753.1
﻿Total assets at year-end |  | 1,149.9 |  | 27.1 |  | 10,295.9
﻿ |  |  |  |  |  |
﻿Year ended December 31, 2015 |  |  |  |  |  |
﻿Segment loss | $ | (244.9) |  | (15.0) |  | (2,270.8)
﻿Revenues from external customers |  | 6.6 |  | – |  | 2,941.3
﻿Interest income |  | 4.0 |  | – |  | 4.0
﻿Interest expense, net of capitalization |  | 117.4 |  | – |  | 117.4
﻿Income tax expense (benefit) |  | 84.5 |  | – |  | (1,026.5)
﻿Significant noncash charges (credits) |  |  |  |  |  |
﻿ Depreciation, depletion and amortization |  | 11.9 |  | – |  | 1,619.8
﻿ Accretion of asset retirement obligations |  | – |  | – |  | 48.7
﻿ Amortization of undeveloped leases |  | – |  | – |  | 75.4
﻿ Impairment of assets |  | – |  | – |  | 2,493.2
﻿ Deferred and noncurrent income taxes |  | (60.5) |  | – |  | (978.0)
﻿Additions to property, plant, equipment |  | 59.9 |  | – |  | 1,791.5
﻿Total assets at year-end |  | 592.2 |  | 38.3 |  | 11,493.8
﻿ ﻿ ﻿ ﻿ ﻿
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﻿ |  |  |  |  |  |  |  |  |  |
﻿Geographic Information | Revenues from External Customers for the Year
﻿(Millions of dollars) | United States |  | Canada |  | Malaysia |  | Other |  | Total
﻿2017 | $ | 958.3 |  | 485.7 |  | 781.1 |  | – |  | 2,225.1
﻿2016 |  | 692.3 |  | 365.3 |  | 753.4 |  | 0.2 |  | 1,811.2
﻿2015 |  | 1,260.2 |  | 549.7 |  | 1,131.4 |  | – |  | 2,941.3
﻿

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