Segment Reporting (Details) $ in Millions	3 Months Ended										12 Months Ended
	Dec. 31, 2016 USD ($)		Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)		Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) customer		Dec. 31, 2015 USD ($) customer		Dec. 31, 2014 USD ($) customer		Sep. 01, 2016
Income Statement
Operating revenues	$ 2,532		$ 3,952	$ 2,638	$ 3,229	$ 3,011		$ 4,434	$ 3,400	$ 3,829	$ 12,351		$ 14,674		$ 15,868
Cost of revenue including selling marketing and general administrative											9,656		11,983		12,824
Depreciation and amortization											1,367		1,566		1,523
Asset Impairment Charges											918		5,030		97
Acquisition-related transaction and integration costs											8		10		84
Research and Development Expense											90		146		88
Costs and Expenses											12,039		18,735		14,616
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											215		0		19
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments											0		21		0
Operating Income (Loss)	(791)		755	87	476	(4,727)		379	232	76	527		(4,040)		1,271
Equity in (losses)/earnings of unconsolidated affiliates											27		36		38
Other than Temporary Impairment Losses, Investments											(268)		(56)		0
Other Nonoperating Income (Expense)											42		33		22
Gain (Loss) on Extinguishment of Debt											(142)		75		(95)
Gain on Sale of Investments											0		(14)		18
Interest expense											(1,061)		(1,128)		(1,119)
(Loss)/income before income taxes											(875)		(5,094)		135
Income tax expense											16		1,342		3
Net (Loss)/Income	(1,055)		393	(276)	47	(6,358)		67	(9)	(136)	(891)		(6,436)		132
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests	(68)		(9)	(5)	(35)	(44)		1	5	(16)	(117)		(54)		(2)
Net (loss)/income attributable to NRG Energy, Inc.	(987)		$ 402	$ (271)	$ 82	(6,314)		$ 66	$ (14)	$ (120)	(774)		(6,382)		134
Operating revenues include inter-segment sales and net derivative gains and losses of:											1,117		1,171		2,002
Balance sheet
Equity investments in affiliates	1,120					1,045					1,120		1,045
Capital expenditures	1,242	[1]				1,267	[2]				1,242	[1]	1,267	[2]
Goodwill	662					999					662		999
Total assets	30,355					32,882					30,355		32,882
NRG Yield
Income Statement
Operating revenues											1,021	[3]	953	[4]	828	[5]
Cost of revenue including selling marketing and general administrative											322		333		285
Depreciation and amortization											297		297		233
Asset Impairment Charges											183		0		0
Acquisition-related transaction and integration costs											1		3		4
Research and Development Expense											0		0		0
Costs and Expenses											803		633		522
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											0				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											218		320		306
Equity in (losses)/earnings of unconsolidated affiliates											37		26		17
Other than Temporary Impairment Losses, Investments											0		0
Other Nonoperating Income (Expense)											3		3		6
Gain (Loss) on Extinguishment of Debt											0		(9)		(1)
Gain on Sale of Investments													0		0
Interest expense											274		263		(216)
(Loss)/income before income taxes											(16)		77		112
Income tax expense											(1)		12		4
Net (Loss)/Income											(15)		65		108
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											(54)		19		16
Net (loss)/income attributable to NRG Energy, Inc.											39		46		92
Operating revenues include inter-segment sales and net derivative gains and losses of:											8		29		12
Balance sheet
Equity investments in affiliates	710					697					710		697
Capital expenditures	23	[1]				30	[2]				23	[1]	30	[2]
Goodwill	0					0					0		0
Total assets	8,383					8,689					8,383		8,689
Corporate
Income Statement
Operating revenues											137	[3]	14	[4]	82	[5]
Cost of revenue including selling marketing and general administrative											235		310		171
Depreciation and amortization											64		59		38
Asset Impairment Charges											33		132		(22)
Acquisition-related transaction and integration costs											7		6		76
Research and Development Expense											24		63		35
Costs and Expenses											363		570		298
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											(78)				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											(304)		(556)		(216)
Equity in (losses)/earnings of unconsolidated affiliates											7		(3)		0
Other than Temporary Impairment Losses, Investments											21		42
Other Nonoperating Income (Expense)											62		77		75
Gain (Loss) on Extinguishment of Debt											(142)		84		(93)
Gain on Sale of Investments													(14)		0
Interest expense											658		779		(806)
(Loss)/income before income taxes											(1,056)		(1,233)		(1,040)
Income tax expense											37		1,347		(5)
Net (Loss)/Income											(1,093)		(2,580)		(1,035)
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											16		(37)		5
Net (loss)/income attributable to NRG Energy, Inc.											(1,109)		(2,543)		(1,040)
Operating revenues include inter-segment sales and net derivative gains and losses of:											191		213		85
Balance sheet
Equity investments in affiliates	91					127					91		127
Capital expenditures	51	[1]				246	[2]				51	[1]	246	[2]
Goodwill	111					111					111		111
Total assets	15,734					19,926					15,734		19,926
Eliminations
Income Statement
Operating revenues											(1,117)		(1,171)		(2,002)
Cost of revenue including selling marketing and general administrative											(1,123)		(1,149)		(2,052)
Depreciation and amortization											0		0		0
Asset Impairment Charges											0		22		0
Acquisition-related transaction and integration costs											0		0		0
Research and Development Expense											0		0		0
Costs and Expenses											(1,123)		(1,127)		(2,052)
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											0				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											6		(44)		50
Equity in (losses)/earnings of unconsolidated affiliates											18		(6)		2
Other than Temporary Impairment Losses, Investments											0		0
Other Nonoperating Income (Expense)											(61)		(98)		(99)
Gain (Loss) on Extinguishment of Debt											0		0		0
Gain on Sale of Investments													0		0
Interest expense											(59)		(95)		96
(Loss)/income before income taxes											22		(53)		49
Income tax expense											0		0		0
Net (Loss)/Income											22		(53)		49
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											(66)		(42)		(24)
Net (loss)/income attributable to NRG Energy, Inc.											88		(11)		73
Operating revenues include inter-segment sales and net derivative gains and losses of:											0		0		0
Balance sheet
Equity investments in affiliates	(257)					(247)					(257)		(247)
Capital expenditures	0	[1]				0	[2]				0	[1]	0	[2]
Goodwill	0					0					0		0
Total assets	(13,865)					(20,075)					(13,865)		(20,075)
Generation [Member]
Income Statement
Operating revenues											6,927	[3]	9,097	[4]	11,113	[5]
Cost of revenue including selling marketing and general administrative											6,020		7,744		8,993
Depreciation and amortization											712		907		966
Asset Impairment Charges											646		4,827		87
Acquisition-related transaction and integration costs											0		0		1
Research and Development Expense											26		31		13
Costs and Expenses											7,404		13,509		10,060
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											293				19
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													21
Operating Income (Loss)											(184)		(4,391)		1,072
Equity in (losses)/earnings of unconsolidated affiliates											(5)		10		23
Other than Temporary Impairment Losses, Investments											142		14
Other Nonoperating Income (Expense)											37		48		39
Gain (Loss) on Extinguishment of Debt											0		0		0
Gain on Sale of Investments													0		18
Interest expense											80		98		(95)
(Loss)/income before income taxes											(374)		(4,445)		1,057
Income tax expense											0		1		4
Net (Loss)/Income											(374)		(4,446)		1,053
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											0		0		(1)
Net (loss)/income attributable to NRG Energy, Inc.											(374)		(4,446)		1,054
Operating revenues include inter-segment sales and net derivative gains and losses of:											893		898		1,873
Balance sheet
Equity investments in affiliates	204					334					204		334
Capital expenditures	779	[1]				798	[2]				779	[1]	798	[2]
Goodwill	199					536					199		536
Total assets	13,234					17,324					13,234		17,324
Retail [Member]
Income Statement
Operating revenues											4,966	[3]	5,389	[4]	5,503	[5]
Cost of revenue including selling marketing and general administrative											3,987		4,561		5,236
Depreciation and amortization											104		123		122
Asset Impairment Charges											0		36		0
Acquisition-related transaction and integration costs											0		1		3
Research and Development Expense											0		0		0
Costs and Expenses											4,091		4,721		5,361
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											0				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											875		668		142
Equity in (losses)/earnings of unconsolidated affiliates											0		0		0
Other than Temporary Impairment Losses, Investments											0		0
Other Nonoperating Income (Expense)											0		0		0
Gain (Loss) on Extinguishment of Debt											0		0		0
Gain on Sale of Investments													0		0
Interest expense											0		0		(1)
(Loss)/income before income taxes											875		668		141
Income tax expense											0		0		0
Net (Loss)/Income											875		668		141
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											0		0		0
Net (loss)/income attributable to NRG Energy, Inc.											875		668		141
Operating revenues include inter-segment sales and net derivative gains and losses of:											2		6		7
Balance sheet
Equity investments in affiliates	0					0					0		0
Capital expenditures	59	[1]				30	[2]				59	[1]	30	[2]
Goodwill	340					340					340		340
Total assets	1,589					1,876					1,589		1,876
Renewables [Member]
Income Statement
Operating revenues											417	[3]	392	[4]	344	[5]
Cost of revenue including selling marketing and general administrative											215		184		191
Depreciation and amortization											190		180		164
Asset Impairment Charges											56		13		32
Acquisition-related transaction and integration costs											0		0		0
Research and Development Expense											40		52		40
Costs and Expenses											501		429		427
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											0				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											(84)		(37)		(83)
Equity in (losses)/earnings of unconsolidated affiliates											(30)		9		(4)
Other than Temporary Impairment Losses, Investments											105		0
Other Nonoperating Income (Expense)											1		3		1
Gain (Loss) on Extinguishment of Debt											0		0		(1)
Gain on Sale of Investments													0		0
Interest expense											108		83		(97)
(Loss)/income before income taxes											(326)		(108)		(184)
Income tax expense											(20)		(18)		0
Net (Loss)/Income											(306)		(90)		(184)
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											(13)		6		2
Net (loss)/income attributable to NRG Energy, Inc.											(293)		(96)		(186)
Operating revenues include inter-segment sales and net derivative gains and losses of:											23		25		$ 25
Balance sheet
Equity investments in affiliates	372					134					372		134
Capital expenditures	330	[1]				163	[2]				330	[1]	163	[2]
Goodwill	12					12					12		12
Total assets	5,280					5,142					$ 5,280		$ 5,142
Customers
Segment Reporting Information
Concentration Risk, Number of Customers Accouting for More Than Ten Percent of Revenues | customer											1,000,000		1,000,000		1,000,000
Threshold percentage of the Company's consolidated revenues attributable to a customer											10.00%		10.00%		10.00%
CVSR [Member]
Segment Reporting Information
Percentage of Ownership Sold of Subsidiary																	51.05%
Segment Recast [Member]
Income Statement
Operating revenues											$ 12,351		$ 14,674		$ 15,868
Cost of revenue including selling marketing and general administrative											9,656		11,983		12,824
Depreciation and amortization											1,367		1,566		1,523
Asset Impairment Charges											918		5,030		97
Acquisition-related transaction and integration costs											8		10		84
Research and Development Expense											90		146		88
Costs and Expenses											12,039		18,735		14,616
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											215				19
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													21
Operating Income (Loss)											527		(4,040)		1,271
Equity in (losses)/earnings of unconsolidated affiliates											27		36		38
Other than Temporary Impairment Losses, Investments											(268)		(56)
Other Nonoperating Income (Expense)											42		33		22
Gain (Loss) on Extinguishment of Debt											(142)		75		(95)
Gain on Sale of Investments													(14)		18
Interest expense											(1,061)		(1,128)		1,119
(Loss)/income before income taxes											(875)		(5,094)		135
Income tax expense											16		1,342		3
Net (Loss)/Income											(891)		(6,436)		132
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											(117)		(54)		(2)
Net (loss)/income attributable to NRG Energy, Inc.											(774)		(6,382)		134
Operating revenues include inter-segment sales and net derivative gains and losses of:											1,179		1,170		2,002
Balance sheet
Equity investments in affiliates	1,120					1,045					1,120		1,045
Capital expenditures	1,242	[6]				1,267	[7]				1,242	[6]	1,267	[7]
Goodwill	662					999					662		999
Total assets	30,355					32,882					30,355		32,882
Segment Recast [Member] | NRG Yield
Income Statement
Operating revenues											1,021	[8]	953	[9]	828	[10]
Cost of revenue including selling marketing and general administrative											322		333		285
Depreciation and amortization											297		297		233
Asset Impairment Charges											183		0		0
Acquisition-related transaction and integration costs											1		3		4
Research and Development Expense											0		0		0
Costs and Expenses											803		633		522
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											0				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											218		320		306
Equity in (losses)/earnings of unconsolidated affiliates											37		26		17
Other than Temporary Impairment Losses, Investments											0		0
Other Nonoperating Income (Expense)											3		3		6
Gain (Loss) on Extinguishment of Debt											0		(9)		(1)
Gain on Sale of Investments													0		0
Interest expense											274		263		216
(Loss)/income before income taxes											(16)		77		112
Income tax expense											(1)		12		4
Net (Loss)/Income											(15)		65		108
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											(54)		19		16
Net (loss)/income attributable to NRG Energy, Inc.											39		46		92
Operating revenues include inter-segment sales and net derivative gains and losses of:											8		29		12
Balance sheet
Equity investments in affiliates	710					697					710		697
Capital expenditures	23	[6]				30	[7]				23	[6]	30	[7]
Goodwill						0							0
Total assets	8,383					8,689					8,383		8,689
Segment Recast [Member] | Corporate
Income Statement
Operating revenues											77	[8]	39	[9]	19	[10]
Cost of revenue including selling marketing and general administrative											212		291		151
Depreciation and amortization											63		59		35
Asset Impairment Charges											33		132		(22)
Acquisition-related transaction and integration costs											7		6		76
Research and Development Expense											24		63		35
Costs and Expenses											339		551		275
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											(78)				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											(340)		(512)		(256)
Equity in (losses)/earnings of unconsolidated affiliates											7		0		0
Other than Temporary Impairment Losses, Investments											21		42
Other Nonoperating Income (Expense)											62		78		75
Gain (Loss) on Extinguishment of Debt											(142)		84		(93)
Gain on Sale of Investments													(14)		0
Interest expense											658		779		806
(Loss)/income before income taxes											(1,092)		(1,185)		(1,080)
Income tax expense											37		1,347		(5)
Net (Loss)/Income											(1,129)		(2,532)		(1,075)
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											16		(37)		5
Net (loss)/income attributable to NRG Energy, Inc.											(1,145)		(2,495)		(1,080)
Operating revenues include inter-segment sales and net derivative gains and losses of:											189		212		85
Balance sheet
Equity investments in affiliates	91					127					91		127
Capital expenditures	110	[6]				246	[7]				110	[6]	246	[7]
Goodwill	111					111					111		111
Total assets	15,590					19,720					15,590		19,720
Segment Recast [Member] | Eliminations
Income Statement
Operating revenues											(1,179)		(1,170)		(2,004)
Cost of revenue including selling marketing and general administrative											(1,184)		(1,149)		(2,058)
Depreciation and amortization											0		0		0
Asset Impairment Charges											0		22		0
Acquisition-related transaction and integration costs											0		0		0
Research and Development Expense											0		0		0
Costs and Expenses											(1,184)		(1,127)		(2,058)
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											0				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											5		(43)		54
Equity in (losses)/earnings of unconsolidated affiliates											18		(9)		2
Other than Temporary Impairment Losses, Investments											0		0
Other Nonoperating Income (Expense)											(61)		(98)		(99)
Gain (Loss) on Extinguishment of Debt											0		0		0
Gain on Sale of Investments													0		0
Interest expense											(59)		(95)		(96)
(Loss)/income before income taxes											21		(55)		53
Income tax expense											0		0		0
Net (Loss)/Income											21		(55)		53
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											(66)		(42)		(24)
Net (loss)/income attributable to NRG Energy, Inc.											87		(13)		77
Operating revenues include inter-segment sales and net derivative gains and losses of:											0		0		0
Balance sheet
Equity investments in affiliates	(257)					(247)					(257)		(247)
Capital expenditures	0	[6]				0	[7]				0	[6]	0	[7]
Goodwill						0							0
Total assets	(14,131)					(20,311)					(14,131)		(20,311)
Segment Recast [Member] | Generation [Member]
Income Statement
Operating revenues											5,679	[8]	7,546	[9]	9,288	[10]
Cost of revenue including selling marketing and general administrative											4,922		6,210		6,985
Depreciation and amortization											702		896		957
Asset Impairment Charges											645		4,827		87
Acquisition-related transaction and integration costs											0		0		1
Research and Development Expense											22		27		12
Costs and Expenses											6,291		11,960		8,042
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											294				19
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													21
Operating Income (Loss)											(318)		(4,393)		1,265
Equity in (losses)/earnings of unconsolidated affiliates											(5)		10		23
Other than Temporary Impairment Losses, Investments											142		14
Other Nonoperating Income (Expense)											36		48		39
Gain (Loss) on Extinguishment of Debt											0		0		0
Gain on Sale of Investments													0		18
Interest expense											79		97		94
(Loss)/income before income taxes											(508)		(4,446)		1,251
Income tax expense											(1)		0		3
Net (Loss)/Income											(507)		(4,446)		1,248
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											0		0		(1)
Net (loss)/income attributable to NRG Energy, Inc.											(507)		(4,446)		1,249
Operating revenues include inter-segment sales and net derivative gains and losses of:											955		898		1,873
Balance sheet
Equity investments in affiliates	204					334					204		334
Capital expenditures	767	[6]				792	[7]				767	[6]	792	[7]
Goodwill	199					536					199		536
Total assets	13,256					17,625					13,256		17,625
Segment Recast [Member] | Retail [Member]
Income Statement
Operating revenues											6,336	[8]	6,914	[9]	7,393	[10]
Cost of revenue including selling marketing and general administrative											5,169		6,113		7,270
Depreciation and amortization											115		133		134
Asset Impairment Charges											1		36		0
Acquisition-related transaction and integration costs											0		1		3
Research and Development Expense											4		4		1
Costs and Expenses											5,289		6,287		7,408
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											(1)				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											1,046		627		(15)
Equity in (losses)/earnings of unconsolidated affiliates											0		0		0
Other than Temporary Impairment Losses, Investments											0		0
Other Nonoperating Income (Expense)											1		(1)		0
Gain (Loss) on Extinguishment of Debt											0		0		0
Gain on Sale of Investments													0		0
Interest expense											1		1		2
(Loss)/income before income taxes											1,046		625		(17)
Income tax expense											1		1		1
Net (Loss)/Income											1,045		624		(18)
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											0		0		0
Net (loss)/income attributable to NRG Energy, Inc.											1,045		624		(18)
Operating revenues include inter-segment sales and net derivative gains and losses of:											4		6		7
Balance sheet
Equity investments in affiliates	0					0					0		0
Capital expenditures	12	[6]				36	[7]				12	[6]	36	[7]
Goodwill	340					340					340		340
Total assets	1,977					2,017					1,977		2,017
Segment Recast [Member] | Renewables [Member]
Income Statement
Operating revenues											417	[8]	392	[9]	344	[10]
Cost of revenue including selling marketing and general administrative											215		185		191
Depreciation and amortization											190		181		164
Asset Impairment Charges											56		13		32
Acquisition-related transaction and integration costs											0		0		0
Research and Development Expense											40		52		40
Costs and Expenses											501		431		427
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal											0				0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments													0
Operating Income (Loss)											(84)		(39)		(83)
Equity in (losses)/earnings of unconsolidated affiliates											(30)		9		(4)
Other than Temporary Impairment Losses, Investments											105		0
Other Nonoperating Income (Expense)											1		3		1
Gain (Loss) on Extinguishment of Debt											0		0		(1)
Gain on Sale of Investments													0		0
Interest expense											108		83		97
(Loss)/income before income taxes											(326)		(110)		(184)
Income tax expense											(20)		(18)		0
Net (Loss)/Income											(306)		(92)		(184)
Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests											(13)		6		2
Net (loss)/income attributable to NRG Energy, Inc.											(293)		(98)		(186)
Operating revenues include inter-segment sales and net derivative gains and losses of:											23		25		$ 25
Balance sheet
Equity investments in affiliates	372					134					372		134
Capital expenditures	330	[6]				163	[7]				330	[6]	163	[7]
Goodwill	12					12					12		12
Total assets	$ 5,280					$ 5,142					$ 5,280		$ 5,142

[1] Includes accruals.

[2] Includes accruals.

[3] (a) Inter-segment sales and net derivative gains and losses included in operating revenues$893 $2 $23 $8 $191 $— $1,117

[4] (a) Inter-segment sales and net derivative gains and losses included in operating revenues$898 $6 $25 $29 $213 $— $1,171

[5] (a) Inter-segment sales and net derivative gains and losses included in operating revenues$1,873 $7 $25 $12 $85 $— $2,002

[6] Includes accruals.

[7] Includes accruals.

[8] (a) Inter-segment sales and net derivative gains and losses included in operating revenues$955 $4 $23 $8 $189 $— $1,179

[9] (a) Inter-segment sales and net derivative gains and losses included in operating revenues$898 $6 $25 $29 $212 $— $1,170

[10] (a) Inter-segment sales and net derivative gains and losses included in operating revenues$1,873 $7 $25 $12 $85 $— $2,002