Supplemental Oil and Gas Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Oil and Gas Exploration and Production Industries Disclosures [Abstract]

Summary of Proved Reserves Based on Average Prices

	Equivalents
(Millions of barrels of oil equivalent)	Total	United States	Canada	Malaysia and Other
Proved developed and undeveloped reserves:
December 31, 2017	698.2	304.9	259.2	134.1
Revisions of previous estimates	(21.8)	(14.0)	(18.1)	10.4
Improved recovery	0.9	—	—	0.9
Extensions and discoveries	122.6	60.1	61.8	0.8
Purchases of properties	106.9	98.7	6.9	1.3
Production	(62.8)	(24.0)	(21.1)	(17.7)
December 31, 2018	844.0	425.6	288.6	129.7
Revisions of previous estimates	28.4	(17.9)	46.1	0.3
Extensions and discoveries	73.3	62.2	11.1	—
Purchases of properties	76.2	76.2	—	—
Sales of properties	(121.5)	(0.1)	—	(121.4)
Production	(75.4)	(45.9)	(21.7)	(7.8)
December 31, 2019	825.0	500.1	324.1	0.8
Revisions of previous estimates	(194.7)	(146.6)	(47.3)	(0.8)
Extensions and discoveries	150.3	19.5	130.7	—
Sales of properties	(1.7)	(1.7)	—	—
Production	(63.9)	(42.8)	(21.1)	—
December 31, 2020 ¹	714.9	328.5	386.4	—
Proved developed reserves:
December 31, 2017	346.7	170.9	114.1	61.7
December 31, 2018	430.2	247.0	124.2	59.1
December 31, 2019	472.3	273.4	198.1	0.8
December 31, 2020 ²	410.8	230.3	180.5	—
Proved undeveloped reserves:
December 31, 2017	351.5	134.0	145.1	72.4
December 31, 2018	413.8	178.7	164.5	70.7
December 31, 2019	352.7	226.7	126.0	—
December 31, 2020 ³	304.1	98.2	205.9	—

1 Includes proved reserves of 17.4 MMBOE, consisting of 15.6 MMBBL oil, 0.7 MMBBL NGLs, and 6.5 BCF natural gas attributable to the noncontrolling interest in MP GOM.

2 Includes proved developed reserves of 14.2 MMBOE, consisting of 12.7 MMBBL oil, 0.6 MMBBL NGLs, and 5.7 BCF natural gas attributable to the noncontrolling interest in MP GOM.

3 Includes proved undeveloped reserves of 3.2 MMBOE, consisting of 2.9 MMBBL oil, 0.1 MMBBL NGLs, and 0.8 BCF natural gas attributable to the noncontrolling interest in MP GOM.

(Millions of barrels)	Total	United States	Canada	Malaysia and Other
Proved developed and undeveloped crude oil reserves:
December 31, 2017	328.1	224.7	51.5	51.9
Revisions of previous estimates	(15.3)	(15.0)	(8.0)	7.7
Improved recovery	0.8	—	—	0.8
Extensions and discoveries	58.9	42.9	16.0	—
Purchases of properties	93.6	92.3	—	1.3
Production	(33.6)	(18.4)	(4.5)	(10.7)
December 31, 2018	432.5	326.5	55.0	51.0
Revisions of previous estimates	(31.0)	(17.1)	(14.0)	0.1
Extensions and discoveries	58.2	49.2	9.0	—
Purchases of properties	56.3	56.3	—	—
Production	(46.3)	(37.0)	(4.7)	(4.6)
December 31, 2019	423.9	377.8	45.3	0.8
Revisions of previous estimates	(137.4)	(116.8)	(19.8)	(0.8)
Extensions and discoveries	19.6	14.5	5.1	—
Sales of properties	(1.5)	(1.5)	—	—
Production	(38.1)	(33.4)	(4.7)	—
December 31, 2020 ¹	266.5	240.6	25.9	—
Proved developed crude oil reserves:
December 31, 2017	185.5	126.3	21.9	37.3
December 31, 2018	249.3	189.0	23.3	37.0
December 31, 2019	230.9	205.0	25.1	0.8
December 31, 2020 ²	179.8	161.4	18.4	—
Proved undeveloped crude oil reserves:
December 31, 2017	142.6	98.4	29.6	14.6
December 31, 2018	183.2	137.5	31.7	14.0
December 31, 2019	193.0	172.8	20.2	—
December 31, 2020 ³	86.7	79.2	7.5	—

1 Includes total proved reserves of 15.6 MMBO for Total and United States attributable to the noncontrolling interest in MP GOM.

2 Includes proved developed reserves of 12.7 MMBO for Total and United States attributable to the noncontrolling interest in MP GOM.

3 Includes proved undeveloped reserves of 2.9 MMBO for Total and United States attributable to the noncontrolling interest in MP GOM.

(Millions of barrels)	Total	United States	Canada	Malaysia and Other
Proved developed and undeveloped NGL reserves:
December 31, 2017	48.9	43.0	5.6	0.3
Revisions of previous estimates	(6.2)	(5.3)	(1.6)	0.7
Extensions and discoveries	12.0	9.7	2.3	—
Purchase of properties	3.0	3.0	—	—
Production	(3.5)	(2.8)	(0.4)	(0.3)
December 31, 2018	54.2	47.6	5.9	0.7
Revisions of previous estimates	(5.0)	(2.5)	(2.5)	—
Extensions and discoveries	6.8	6.4	0.4	—
Purchases of properties	5.2	5.2	—	—
Production	(4.5)	(3.9)	(0.5)	(0.1)
December 31, 2019	56.1	52.8	3.3	—
Revisions of previous estimates	(16.4)	(17.1)	0.7	—
Extensions and discoveries	2.8	2.7	0.1	—
Sales of properties	(0.1)	(0.1)	—	—
Production	(4.2)	(3.7)	(0.5)	—
December 31, 2020 ¹	38.2	34.6	3.6	—
Proved developed NGL reserves:
December 31, 2017	24.6	23.3	1.0	0.3
December 31, 2018	27.3	24.9	1.7	0.7
December 31, 2019	28.1	26.2	1.9	—
December 31, 2020 ²	28.7	25.5	3.2	—
Proved undeveloped NGL reserves:
December 31, 2017	24.3	19.7	4.6	—
December 31, 2018	26.9	22.7	4.2	—
December 31, 2019	28.0	26.6	1.4	—
December 31, 2020 ³	9.5	9.1	0.4	—

1 Includes total proved reserves of 0.7 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.

2 Includes proved developed reserves of 0.6 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.

3 Includes proved undeveloped reserves of 0.1 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.

(Billions of cubic feet)	Total	United States	Canada	Malaysia and Other
Proved developed and undeveloped natural gas reserves:
December 31, 2017	1,927.1	223.3	1,212.4	491.4
Revisions of previous estimates	(1.8)	37.6	(51.2)	11.8
Extensions and discoveries	310.3	44.7	261.0	4.6
Purchases of properties	61.7	20.3	41.4	—
Production	(154.3)	(16.9)	(97.2)	(40.2)
December 31, 2018	2,143.6	309.0	1,366.4	468.2
Revisions of previous estimates	386.5	10.3	375.3	0.9
Extensions and discoveries	49.8	39.5	10.3	—
Purchases of properties	88.3	88.3	—	—
Production	(147.8)	(30.2)	(99.1)	(18.5)
December 31, 2019	2,069.7	416.8	1,652.9	—
Revisions of previous estimates	(245.4)	(76.2)	(169.2)	—
Extensions and discoveries	767.2	14.0	753.2	—
Sales of properties	(0.7)	(0.7)	—	—
Production	(129.8)	(34.4)	(95.4)	—
December 31, 2020 1,4	2,461.0	319.5	2,141.5	—
Proved developed natural gas reserves:
December 31, 2017	819.3	127.7	547.0	144.6
December 31, 2018	921.6	198.3	595.0	128.3
December 31, 2019	1,279.8	253.1	1,026.7	—
December 31, 2020 ²	1,213.8	260.2	953.6	—
Proved undeveloped natural gas reserves:
December 31, 2017	1,107.8	95.6	665.5	346.7
December 31, 2018	1,222.0	110.7	771.4	339.9
December 31, 2019	789.9	163.7	626.2	—
December 31, 2020 ³	1,247.2	59.3	1,187.9	—

1 Includes total proved reserves of 6.5 BCF for Total and United States attributable to the noncontrolling interest in MP GOM.

2 Includes proved developed reserves of 5.7 BCF for Total and United States attributable to the noncontrolling interest in MP GOM.

3 Includes proved undeveloped reserves of 0.8 BCF for Total and United States attributable to the noncontrolling interest in MP GOM.

4 Includes proved natural gas reserves to be consumed in operations as fuel of 72.0 BCF and 108.8 BCF for the U.S. and Canada, respectively, with 1.6 BCF attributable to the noncontrolling interest in MP GOM.

Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities

(Millions of dollars)	United States		Canada	Malaysia	Other	Total
Year ended December 31, 2020
Property acquisition costs
Unproved	$	6.5	0.5	—	7.3	14.3
Proved	0.2		—	—	—	0.2
Total acquisition costs	6.7		0.5	—	7.3	14.5
Exploration costs 1	34.3		(0.4)	—	24.7	58.6
Development costs 1	609.2		120.8	—	6.8	736.8
Total costs incurred	650.2		120.9	—	38.8	809.9
Charged to expense
Geophysical and other costs	14.3		0.7	—	23.6	38.6
Total charged to expense	14.3		0.7	—	23.6	38.6
Property additions	$	635.9	120.2	—	15.2	771.3
Year ended December 31, 2019
Property acquisition costs
Unproved	$	533.8	0.2	—	13.0	547.0
Proved	733.1		—	—	—	733.1
Total acquisition costs	1,266.9		0.2	—	13.0	1,280.1
Exploration costs 1	44.8		6.4	—	67.4	118.6
Development costs 1	979.0		281.8	—	21.6	1,282.4
Total costs incurred	2,290.7		288.4	—	102.0	2,681.1
Charged to expense
Geophysical and other costs	21.6		0.5	—	32.2	54.3
Total charged to expense	21.6		0.5	—	32.2	54.3
Property additions	$	2,269.1	287.9	—	69.8	2,626.8
Year ended December 31, 2018
Property acquisition costs
Unproved	$	2.8	—	—	0.2	3.0
Proved	794.3		—	—	—	794.3
Total acquisition costs	797.1		—	—	0.2	797.3
Exploration costs 1	88.1		0.6	2.2	35.1	126.0
Development costs 1	853.7		373.8	145.9	16.6	1,390.0
Total costs incurred	1,738.9		374.4	148.1	51.9	2,313.3
Charged to expense
Dry hole expense	16.0		—	0.1	4.5	20.6
Geophysical and other costs	13.4		0.6	2.1	31.3	47.4
Total charged to expense	29.4		0.6	2.2	35.8	68.0
Property additions	$	1,709.5	373.8	145.9	16.1	2,245.3

1 Includes noncash asset retirement costs as follows:

2020
Exploration costs	$	—	—	—	—	—
Development costs	12.8		1.9	—	—	14.7
	$	12.8	1.9	—	—	14.7
2019
Exploration costs	$	—	—	—	—	—
Development costs	75.8		3.8	—	—	79.6
	$	75.8	3.8	—	—	79.6
2018
Exploration costs	$	—	—	—	—	—
Development costs	366.0		—	7.3	0.2	373.5
	$	366.0	—	7.3	0.2	373.5

Results of Operations for Oil andGas Producing Activities

(Millions of dollars)	United States		Canada	Other	Total
Year ended December 31, 2020
Revenues
Crude oil and natural gas liquids sales	$	1,335.8	174.0	1.8	1,511.6
Natural gas sales	69.4		170.6	—	240.1
Total oil and natural gas revenues	1,405.3		344.6	1.8	1,751.7
Other operating revenues	6.5		1.2	—	7.7
Total revenues	1,411.8		345.8	1.8	1,759.4
Costs and expenses
Lease operating expenses	476.9		121.6	1.6	600.1
Severance and ad valorem taxes	27.2		1.3	—	28.5
Transportation, gathering and processing	127.7		44.7	—	172.4
Restructuring expenses	1.2		—	—	1.2
Exploration costs charged to expense	35.5		0.6	23.6	59.7
Undeveloped lease amortization	17.2		0.4	9.2	26.8
Depreciation, depletion and amortization	749.4		213.2	2.3	964.9
Accretion of asset retirement obligations	36.6		5.6	—	42.2
Impairment of assets	1,152.5		—	39.7	1,192.2
Selling and general expenses	24.6		17.1	7.1	48.8
Other expenses (benefits)	21.5		(2.3)	1.8	21.0
Total costs and expenses	2,670.3		402.2	85.3	3,157.8
Results of operations before taxes	(1,258.5)		(56.4)	(83.5)	(1,398.4)
Income tax expense (benefit)	(244.2)		(21.4)	2.1	(263.5)
Results of operations	$	(1,014.3)	(35.0)	(85.6)	(1,134.9)
Year ended December 31, 2019
Revenues
Crude oil and natural gas liquids sales	$	2,285.8	287.4	11.6	2,584.8
Natural gas sales	73.9		158.4	—	232.3
Total oil and natural gas revenues	2,359.7		445.8	11.6	2,817.1
Other operating revenues	7.3		1.2	—	8.5
Total revenues	2,367.0		447.0	11.6	2,825.6
Costs and expenses
Lease operating expenses	461.5		142.4	1.3	605.2
Severance and ad valorem taxes	46.6		1.4	—	48.0
Transportation, gathering and processing	140.8		35.5	—	176.3
Exploration costs charged to expense	21.4		0.6	45.3	67.3
Undeveloped lease amortization	23.1		1.3	3.6	28.0
Depreciation, depletion and amortization	878.7		243.0	3.5	1,125.2
Accretion of asset retirement obligations	34.4		6.1	—	40.5
Selling and general expenses	74.3		30.0	22.5	126.8
Other expenses	52.2		(6.1)	1.3	47.4
Total costs and expenses	1,733.0		454.2	77.5	2,264.7
Results of operations before taxes	634.0		(7.2)	(65.9)	560.9
Income tax expense (benefit)	115.6		(2.9)	(12.4)	100.3
Results of operations	$	518.4	(4.3)	(53.5)	460.6

1 Results exclude corporate overhead, interest and discontinued operations. Results include noncontrolling interest in MP GOM.

(Millions of dollars)	United States		Canada	Other	Total
Year ended December 31, 2018
Revenues
Crude oil and natural gas liquids sales	$	1,277.7	302.8	6.1	1,586.6
Natural gas sales	53.6		166.3	—	219.9
Total oil and natural gas revenues	1,331.3		469.1	6.1	1,806.5
Other operating revenues	1.4		1.4	16.1	18.9
Total revenues	1,332.7		470.5	22.2	1,825.4
Costs and expenses
Lease operating expenses	230.5		122.6	0.7	353.8
Severance and ad valorem taxes	50.9		1.2	—	52.1
Transportation, gathering and processing	43.1		31.9	—	75.0
Exploration costs charged to expense	29.4		0.6	31.6	61.6
Undeveloped lease amortization	36.8		0.8	2.5	40.1
Depreciation, depletion and amortization	519.5		232.4	3.5	755.4
Accretion of asset retirement obligations	19.5		7.7	—	27.2
Impairment of assets	20.0		—	—	20.0
Selling and general expenses	49.0		26.8	23.5	99.3
Other expenses	23.0		(19.1)	2.3	6.2
Total costs and expenses	1,021.7		404.9	64.1	1,490.7
Results of operations before taxes	311.0		65.6	(41.9)	334.7
Income tax expense (benefit)	68.1		14.5	(25.3)	57.3
Results of operations	$	242.9	51.1	(16.6)	277.4

1 Results exclude corporate overhead, interest and discontinued operations. Results include noncontrolling interest in MP GOM.

Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves

(Millions of dollars)	United States		Canada	Malaysia & Other	Total
December 31, 2020
Future cash inflows	$	9,976.7	4,617.5	—	14,594.2
Future development costs	(1,289.8)		(404.3)	—	(1,694.1)
Future production costs	(5,777.5)		(2,634.6)	—	(8,412.1)
Future income taxes	—		(166.8)	—	(166.8)
Future net cash flows	2,909.4		1,411.8	—	4,321.2
10% annual discount for estimated timing of cash flows	(1,079.2)		(623.4)	—	(1,702.6)
Standardized measure of discounted future net cash flows	$	1,830.2	788.4	—	2,618.6
December 31, 2019
Future cash inflows	$	23,565.6	4,912.1	55.7	28,533.4
Future development costs	(4,137.8)		(723.7)	(0.3)	(4,861.8)
Future production costs	(8,986.2)		(2,549.9)	(29.9)	(11,566.0)
Future income taxes	(1,709.3)		(414.5)	(14.1)	(2,137.9)
Future net cash flows	8,732.3		1,224.0	11.4	9,967.7
10% annual discount for estimated timing of cash flows	(3,633.1)		(504.0)	(3.0)	(4,140.1)
Standardized measure of discounted future net cash flows	$	5,099.2	720.0	8.4	5,827.6
December 31, 2018
Future cash inflows	$	23,473.9	5,437.5	5,511.6	34,423.0
Future development costs	(3,279.1)		(1,362.7)	(517.4)	(5,159.2)
Future production costs	(7,279.5)		(2,693.0)	(2,813.4)	(12,785.9)
Future income taxes	(2,216.5)		(236.4)	(472.0)	(2,924.9)
Future net cash flows	10,698.8		1,145.4	1,708.8	13,553.0
10% annual discount for estimated timing of cash flows	(4,295.4)		(531.4)	(446.3)	(5,273.1)
Standardized measure of discounted future net cash flows	$	6,403.4	614.0	1,262.5	8,279.9

1 Includes noncontrolling interest in MP GOM.

Principal Sources of Change in the Standardized Measure of Discounted Future Net Cash Flows

(Millions of dollars)	2020		2019	2018
Net changes in prices and production costs 2	$	(5,942.1)	(2,993.9)	2,972.6
Net changes in development costs	2,215.1		(675.7)	(1,891.1)
Sales and transfers of oil and natural gas produced, net of production costs	(1,123.1)		(2,163.8)	(1,978.6)
Net change due to extensions and discoveries	568.5		1,221.9	1,930.3
Net change due to purchases and sales of proved reserves	(14.6)		(628.1)	3,152.4
Development costs incurred	736.8		1,282.4	1,017.3
Accretion of discount	699.3		1,002.0	469.5
Revisions of previous quantity estimates	(1,461.3)		(71.2)	(347.8)
Net change in income taxes	1,112.4		574.1	(967.6)
Net increase (decrease)	(3,209.0)		(2,452.3)	4,357.0
Standardized measure at January 1	5,827.6		8,279.9	3,922.9
Standardized measure at December 31	$	2,618.6	5,827.6	8,279.9

1 Includes noncontrolling interest in MP GOM.

2 The average prices used for 2020 were $39.57 per barrel for NYMEX crude oil (WTI), and $1.98 per Mcf for natural gas (Henry Hub).The average prices used for 2019 were $55.69 per barrel for NYMEX crude oil (WTI), and $2.57 per Mcf for natural gas (Henry Hub). The average prices used for 2018 were $65.56 per barrel for NYMEX crude oil (WTI), and $3.10 per Mcf for natural gas (Henry Hub).

Capitalized Costs Relating to Oil and Gas Producing Activities

(Millions of dollars)	United States		Canada	Other	Total
December 31, 2020
Unproved oil and natural gas properties	$	646.0	22.2	137.5	805.7
Proved oil and natural gas properties	14,011.4		4,619.4	23.8	18,654.6
Gross capitalized costs	14,657.4		4,641.6	161.3	19,460.3
Accumulated depreciation, depletion and amortization
Unproved oil and natural gas properties	(105.0)		—	(14.5)	(119.5)
Proved oil and natural gas properties	(8,166.5)		(2,944.3)	(20.7)	(11,131.5)
Net capitalized costs	$	6,385.9	1,697.3	126.1	8,209.3
December 31, 2019
Unproved oil and natural gas properties	$	1,116.6	243.7	210.4	1,570.7
Proved oil and natural gas properties	13,292.6		4,176.7	21.1	17,490.4
Gross capitalized costs	14,409.2		4,420.4	231.5	19,061.1
Accumulated depreciation, depletion and amortization
Unproved oil and natural gas properties	(136.4)		(225.4)	(25.9)	(387.7)
Proved oil and natural gas properties	(6,298.9)		(2,438.6)	(2.4)	(8,739.9)
Net capitalized costs	$	7,973.9	1,756.4	203.2	9,933.5