Segment Disclosures (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Reconciliation of Modified EBITDA to Net income (loss) [Table Text Block]

The following table reflects the reconciliation of Modified EBITDA to Net income (loss) as reported in the Consolidated Statement of Income:

	Year Ended December 31,
	2021		2020		2019
	(Millions)
Modified EBITDA by segment:
Transmission & Gulf of Mexico	$	2,621	$	2,379	$	2,175
Northeast G&P	1,712		1,489		1,314
West	961		947		952
Gas & NGL Marketing Services	22		51		—
Other	178		(15)		6
	5,494		4,851		4,447
Accretion expense associated with asset retirement obligations for nonregulated operations	(45)		(35)		(33)
Depreciation and amortization expenses	(1,842)		(1,721)		(1,714)
Impairment of goodwill	—		(187)		—
Equity earnings (losses)	608		328		375
Impairment of equity-method investments	—		(1,046)		(186)
Other investing income (loss) – net	7		8		107
Proportional Modified EBITDA of equity-method investments	(970)		(749)		(746)
Interest expense	(1,179)		(1,172)		(1,186)
(Provision) benefit for income taxes	(511)		(79)		(335)
Income (loss) from discontinued operations	—		—		(15)
Net income (loss)	$	1,562	$	198	$	714

Reconciliation of revenue from segment to consolidated [Table Text Block]

The following table reflects the reconciliation of Segment revenues to Total revenues as reported in the Consolidated Statement of Income and Other financial information:

	Transmission & Gulf of Mexico		Northeast G&P		West		Gas & NGL Marketing Services (1)		Other		Eliminations		Total
	(Millions)
2021
Segment revenues:
Service revenues
External	$	3,310	$	1,490	$	1,178	$	3	$	20	$	—	$	6,001
Internal	75		38		70		—		12		(195)		—
Total service revenues	3,385		1,528		1,248		3		32		(195)		6,001
Total service revenues – commodity consideration	52		7		179		—		—		—		238
Product sales
External	231		13		60		4,094		138		—		4,536
Internal	118		86		583		198		195		(1,180)		—
Total product sales	349		99		643		4,292		333		(1,180)		4,536
Net gain (loss) on commodity derivatives (2)	—		—		(44)		(84)		(20)		—		(148)
Total revenues	$	3,786	$	1,634	$	2,026	$	4,211	$	345	$	(1,375)	$	10,627
Other financial information:
Additions to long-lived assets	$	861	$	164	$	209	$	1	$	620	$	—	$	1,855
Proportional Modified EBITDA of equity-method investments	183		682		105		—		—		—		970
2020
Segment revenues:
Service revenues
External	$	3,207	$	1,416	$	1,248	$	32	$	21	$	—	$	5,924
Internal	50		49		24		—		13		(136)		—
Total service revenues	3,257		1,465		1,272		32		34		(136)		5,924
Total service revenues – commodity consideration	21		7		101		—		—		—		129
Product sales
External	144		16		20		1,491		—		—		1,671
Internal	47		41		132		111		—		(331)		—
Total product sales	191		57		152		1,602		—		(331)		1,671
Net gain (loss) on commodity derivatives (2)	—		—		(2)		(3)		—		—		(5)
Total revenues	$	3,469	$	1,529	$	1,523	$	1,631	$	34	$	(467)	$	7,719
Other financial information:
Additions to long-lived assets	$	706	$	137	$	318	$	—	$	122	$	—	$	1,283
Proportional Modified EBITDA of equity-method investments	166		473		110		—		—		—		749

	Transmission & Gulf of Mexico		Northeast G&P		West		Gas & NGL Marketing Services (1)		Other		Eliminations		Total
	(Millions)
2019
Segment revenues:
Service revenues
External	$	3,261	$	1,291	$	1,361	$	3	$	17	$	—	$	5,933
Internal	50		47		28		—		13		(138)		—
Total service revenues	3,311		1,338		1,389		3		30		(138)		5,933
Total service revenues – commodity consideration	41		12		150		—		—		—		203
Product sales
External	217		115		37		1,694		—		—		2,063
Internal	71		35		182		146		—		(434)		—
Total product sales	288		150		219		1,840		—		(434)		2,063
Net gain (loss) on commodity derivatives (2)	—		—		—		2		—		—		2
Total revenues	$	3,640	$	1,500	$	1,758	$	1,845	$	30	$	(572)	$	8,201
Other financial information:
Additions to long-lived assets	$	1,341	$	1,245	$	304	$	—	$	21	$	—	$	2,911
Proportional Modified EBITDA of equity-method investments	177		454		115		—		—		—		746

______________

(1)    As we are acting as agent for natural gas marketing customers of operations acquired in the Sequent Acquisition, revenues are presented net of the related costs of those activities in the Consolidated Statement of Income.

(2)    We record transactions that qualify as derivatives at fair value with changes in fair value recognized in earnings in the period of change and characterized as unrealized gains or losses. Gains and losses on derivatives held for energy trading purposes are presented on a net basis in revenue.

Total assets and equity method investments by reporting segment [Table Text Block]

The following table reflects Total assets and Equity-method investments by reportable segments:

	Total Assets				Equity-Method Investments
	December 31, 2021		December 31, 2020		December 31, 2021		December 31, 2020
	(Millions)
Transmission & Gulf of Mexico	$	20,394	$	19,112	$	602	$	610
Northeast G&P	14,939		14,569		3,681		3,682
West	10,330		10,329		838		867
Gas & NGL Marketing Services	2,127		234		—		—
Other (1)	2,991		923		—		—
Eliminations (2)	(3,169)		(1,002)		—		—
Total	$	47,612	$	44,165	$	5,121	$	5,159

______________

(1)    Increase in Other is due primarily to an increased cash balance and the acquisitions of oil and gas properties in 2021.

(2)    Eliminations primarily relate to the intercompany notes and accounts receivable generated by our cash management program.