XML 139 R124.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Supplemental Oil and Gas Information - Summary of Proved Reserves Based on Average Prices (Details)
MMBbls in Millions, ft³ in Billions
 12 Months Ended
Dec. 31, 2019
MMBbls
ft³
Dec. 31, 2018
MMBbls
ft³
Dec. 31, 2017
MMBbls
ft³
Dec. 31, 2016
MMBbls
ft³
Proved developed and undeveloped oil reserves:        
Proved developed reserves 472.3 430.2 346.7 343.5
Proved undeveloped reserves 352.7 413.8 351.5 341.1
Crude Oil        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 844.0 698.2 684.5  
Revisions of previous estimates 28.4 (21.8) (5.6)  
Improved recovery   0.9 2.0  
Extensions and discoveries 73.3 122.6 71.2  
Purchases of properties 76.2 106.9 5.9  
Sales of properties (121.5)      
Production (75.4) (62.8) (59.8)  
Proved developed and undeveloped reserves, Ending Balance 825.0 844.0 698.2  
Net crude oil and condensate revenue | Crude Oil        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 432.5 328.1 329.0  
Revisions of previous estimates (31.0) (15.3) (6.0)  
Improved recovery   0.8 2.0  
Extensions and discoveries 58.2 58.9 31.6  
Purchases of properties 56.3 93.6 4.7  
Sales of properties (45.8)      
Production (46.3) (33.6) (33.2)  
Proved developed and undeveloped reserves, Ending Balance 423.9 432.5 328.1  
Proved developed reserves 230.9 249.3 185.5 184.9
Proved undeveloped reserves 193.0 183.2 142.6 144.1
Net natural gas liquids revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 54.2 48.9 42.5  
Revisions of previous estimates (5.0) (6.2) 1.3  
Extensions and discoveries 6.8 12.0 7.8  
Purchases of properties 5.2 3.0 0.5  
Sales of properties (0.6)      
Production (4.5) (3.5) (3.2)  
Proved developed and undeveloped reserves, Ending Balance 56.1 54.2 48.9  
Proved developed reserves 28.1 27.3 24.6 22.2
Proved undeveloped reserves 28.0 26.9 24.3 20.3
Net natural gas revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance | ft³ 2,143.6 1,927.1 1,878.0  
Revisions of previous estimates | ft³ 386.5 (1.8) (5.4)  
Improved recovery | ft³   0.6    
Extensions and discoveries | ft³ 49.8 310.3 190.6  
Purchases of properties | ft³ 88.3 61.7 4.0  
Sales of properties (450,700.0)      
Production | ft³ (147.8) (154.3) (140.1)  
Proved developed and undeveloped reserves, Ending Balance | ft³ 2,069.7 2,143.6 1,927.1  
Proved developed reserves | ft³ 1,279.8 921.6 819.3 818.1
Proved undeveloped reserves | ft³ 789.9 1,222.0 1,107.8 1,059.9
MP Gulf of Mexico LLC        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped reserves, Ending Balance 24.6      
Proved developed reserves 19.6      
Proved undeveloped reserves 5.0      
MP Gulf of Mexico LLC | Net crude oil and condensate revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped reserves, Ending Balance 22.1      
Proved developed reserves 17.7      
Proved undeveloped reserves 4.4      
MP Gulf of Mexico LLC | Net natural gas liquids revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped reserves, Ending Balance 0.9      
Proved developed reserves 0.7      
Proved undeveloped reserves 0.2      
MP Gulf of Mexico LLC | Net natural gas revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped reserves, Ending Balance | ft³ 9.5      
Proved developed reserves | ft³ 7.1      
Proved undeveloped reserves | ft³ 2.4      
United States        
Proved developed and undeveloped oil reserves:        
Proved developed reserves 273.4 247.0 170.9 157.8
Proved undeveloped reserves 226.7 178.7 134.0 129.6
United States | Crude Oil        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 425.6 304.9 287.4  
Revisions of previous estimates (17.9) (14.0) (5.4)  
Improved recovery   0.0 0.0  
Extensions and discoveries 62.2 60.1 39.6  
Purchases of properties 76.2 98.7 5.9  
Sales of properties (0.1)      
Production (45.9) (24.0) (22.5)  
Proved developed and undeveloped reserves, Ending Balance 500.1 425.6 304.9  
United States | Net crude oil and condensate revenue | Crude Oil        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 326.5 224.7 214.4  
Revisions of previous estimates (17.1) (15.0) (4.7)  
Improved recovery   0.0 0.0  
Extensions and discoveries 49.2 42.9 27.2  
Purchases of properties 56.3 92.3 4.7  
Sales of properties (0.1)      
Production (37.0) (18.4) (16.9)  
Proved developed and undeveloped reserves, Ending Balance 377.8 326.5 224.7  
Proved developed reserves 205.0 189.0 126.3 113.9
Proved undeveloped reserves 172.8 137.5 98.4 100.5
United States | Net natural gas liquids revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 47.6 43.0 36.4  
Revisions of previous estimates (2.5) (5.3) 2.0  
Extensions and discoveries 6.4 9.7 7.0  
Purchases of properties 5.2 3.0 0.5  
Sales of properties 0.0      
Production (3.9) (2.8) (2.9)  
Proved developed and undeveloped reserves, Ending Balance 52.8 47.6 43.0  
Proved developed reserves 26.2 24.9 23.3 20.8
Proved undeveloped reserves 26.6 22.7 19.7 15.6
United States | Net natural gas revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance | ft³ 309.0 223.3 219.4  
Revisions of previous estimates | ft³ 10.3 37.6 (16.0)  
Improved recovery | ft³   0.0    
Extensions and discoveries | ft³ 39.5 44.7 32.2  
Purchases of properties | ft³ 88.3 20.3 4.0  
Sales of properties (100.0)      
Production | ft³ (30.2) (16.9) (16.3)  
Proved developed and undeveloped reserves, Ending Balance | ft³ 416.8 309.0 223.3  
Proved developed reserves | ft³ 253.1 198.3 127.7 138.7
Proved undeveloped reserves | ft³ 163.7 110.7 95.6 80.7
Canada        
Proved developed and undeveloped oil reserves:        
Proved developed reserves 198.1 124.2 114.1 103.3
Proved undeveloped reserves 126.0 164.5 145.1 137.7
Canada | Crude Oil        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 288.6 259.2 241.0  
Revisions of previous estimates 46.1 (18.1) 4.9  
Improved recovery   0.0 0.0  
Extensions and discoveries 11.1 61.8 31.3  
Purchases of properties 0.0 6.9 0.0  
Sales of properties 0.0      
Production (21.7) (21.1) (18.1)  
Proved developed and undeveloped reserves, Ending Balance 324.1 288.6 259.2  
Canada | Net crude oil and condensate revenue | Crude Oil        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 55.0 51.5 48.9  
Revisions of previous estimates (14.0) (8.0) 2.3  
Improved recovery   0.0 0.0  
Extensions and discoveries 9.0 16.0 4.4  
Purchases of properties 0.0 0.0 0.0  
Sales of properties 0.0      
Production (4.7) (4.5) (4.1)  
Proved developed and undeveloped reserves, Ending Balance 45.3 55.0 51.5  
Proved developed reserves 25.1 23.3 21.9 19.2
Proved undeveloped reserves 20.2 31.7 29.6 29.7
Canada | Net natural gas liquids revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 5.9 5.6 5.6  
Revisions of previous estimates (2.5) (1.6) (0.6)  
Extensions and discoveries 0.4 2.3 0.8  
Purchases of properties 0.0 0.0 0.0  
Sales of properties 0.0      
Production (0.5) (0.4) (0.2)  
Proved developed and undeveloped reserves, Ending Balance 3.3 5.9 5.6  
Proved developed reserves 1.9 1.7 1.0 0.9
Proved undeveloped reserves 1.4 4.2 4.6 4.7
Canada | Net natural gas revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance | ft³ 1,366.4 1,212.4 1,118.9  
Revisions of previous estimates | ft³ 375.3 (51.2) 19.4  
Improved recovery | ft³   0.0    
Extensions and discoveries | ft³ 10.3 261.0 156.7  
Purchases of properties | ft³ 0.0 41.4 0.0  
Sales of properties 0.0      
Production | ft³ (99.1) (97.2) (82.6)  
Proved developed and undeveloped reserves, Ending Balance | ft³ 1,652.9 1,366.4 1,212.4  
Proved developed reserves | ft³ 1,026.7 595.0 547.0 498.9
Proved undeveloped reserves | ft³ 626.2 771.4 665.5 620.0
Malaysia & Other        
Proved developed and undeveloped oil reserves:        
Proved developed reserves 0.8 59.1 61.7 82.4
Proved undeveloped reserves 0.0 70.7 72.4 73.8
Malaysia & Other | Crude Oil        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 129.7 134.1 156.2  
Revisions of previous estimates 0.3 10.4 (5.2)  
Improved recovery   0.9 2.0  
Extensions and discoveries 0.0 0.8 0.3  
Purchases of properties 0.0 1.3 0.0  
Sales of properties (121.4)      
Production (7.8) (17.7) (19.2)  
Proved developed and undeveloped reserves, Ending Balance 0.8 129.7 134.1  
Malaysia & Other | Net crude oil and condensate revenue | Crude Oil        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 51.0 51.9 65.7  
Revisions of previous estimates 0.1 7.7 (3.6)  
Improved recovery   0.8 2.0  
Extensions and discoveries 0.0 0.0 0.0  
Purchases of properties 0.0 1.3 0.0  
Sales of properties (45.7)      
Production (4.6) (10.7) (12.2)  
Proved developed and undeveloped reserves, Ending Balance 0.8 51.0 51.9  
Proved developed reserves 0.8 37.0 37.3 51.8
Proved undeveloped reserves 0.0 14.0 14.6 13.9
Malaysia & Other | Net natural gas liquids revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance 0.7 0.3 0.5  
Revisions of previous estimates 0.0 0.7 (0.1)  
Extensions and discoveries 0.0 0.0 0.0  
Purchases of properties 0.0 0.0 0.0  
Sales of properties (0.6)      
Production (0.1) (0.3) (0.1)  
Proved developed and undeveloped reserves, Ending Balance 0.0 0.7 0.3  
Proved developed reserves 0.0 0.7 0.3 0.5
Proved undeveloped reserves 0.0 0.0 0.0 0.0
Malaysia & Other | Net natural gas revenue        
Proved developed and undeveloped oil reserves:        
Proved developed and undeveloped crude oil/synthetic oil reserves, Beginning Balance | ft³ 468.2 491.4 539.7  
Revisions of previous estimates | ft³ 0.9 11.8 (8.8)  
Improved recovery | ft³   0.6    
Extensions and discoveries | ft³ 0.0 4.6 1.7  
Purchases of properties | ft³ 0.0 0.0 0.0  
Sales of properties (450,600.0)      
Production | ft³ (18.5) (40.2) (41.2)  
Proved developed and undeveloped reserves, Ending Balance | ft³ 0.0 468.2 491.4  
Proved developed reserves | ft³ 0.0 128.3 144.6 180.5
Proved undeveloped reserves | ft³ 0.0 339.9 346.7 359.2