Segment Disclosures (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

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 Operations and Other financial information:

	Atlantic-Gulf		Northeast G&P		West		Other		Eliminations			Total
	(Millions)
2019
Segment revenues:
Service revenues
External	$	2,812	$	1,291	$	1,813	$	17	$	—		$	5,933
Internal	49		47		—		13		(109		)	—
Total service revenues	2,861		1,338		1,813		30		(109		)	5,933
Total service revenues – commodity consideration	41		12		150		—		—			203
Product sales
External	217		115		1,733		—		—			2,065
Internal	71		35		64		—		(170		)	—
Total product sales	288		150		1,797		—		(170		)	2,065
Total revenues	$	3,190	$	1,500	$	3,760	$	30	$	(279	)	$	8,201
Other financial information:
Additions to long-lived assets	$	1,179	$	1,245	$	466	$	21	$	—		$	2,911
Proportional Modified EBITDA of equity-method investments	177		454		115		—		—			746
2018
Segment revenues:
Service revenues
External	$	2,460	$	935	$	2,085	$	22	$	—		$	5,502
Internal	49		41		—		12		(102		)	—
Total service revenues	2,509		976		2,085		34		(102		)	5,502
Total service revenues – commodity consideration	59		20		321		—		—			400
Product sales
External	174		245		2,365		—		—			2,784
Internal	261		42		83		—		(386		)	—
Total product sales	435		287		2,448		—		(386		)	2,784
Total revenues	$	3,003	$	1,283	$	4,854	$	34	$	(488	)	$	8,686
Other financial information:
Additions to long-lived assets	$	2,297	$	477	$	361	$	36	$	—		$	3,171
Proportional Modified EBITDA of equity-method investments	183		493		94		—		—			770
2017
Segment revenues:
Service revenues
External	$	2,202	$	837	$	2,246	$	27	$	—		$	5,312
Internal	37		35		—		11		(83		)	—
Total service revenues	2,239		872		2,246		38		(83		)	5,312
Product sales
External	257		264		1,840		358		—			2,719
Internal	227		27		173		8		(435		)	—
Total product sales	484		291		2,013		366		(435		)	2,719
Total revenues	$	2,723	$	1,163	$	4,259	$	404	$	(518	)	$	8,031
Other financial information:
Additions to long-lived assets	$	2,001	$	460	$	321	$	32	$	—		$	2,814
Proportional Modified EBITDA of equity-method investments	264		452		79		—		—			795

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 Operations:

	Year Ended December 31,
	2019			2018			2017
	(Millions)
Modified EBITDA by segment:
Atlantic-Gulf	$	1,895		$	2,023		$	1,238
Northeast G&P	1,314			1,086			819
West	1,232			308			412
Other	6			(29		)	997
	4,447			3,388			3,466
Accretion expense associated with asset retirement obligations for nonregulated operations	(33		)	(33		)	(33		)
Depreciation and amortization expenses	(1,714		)	(1,725		)	(1,736		)
Equity earnings (losses)	375			396			434
Other investing income (loss) – net	(79		)	187			282
Proportional Modified EBITDA of equity-method investments	(746		)	(770		)	(795		)
Interest expense	(1,186		)	(1,112		)	(1,083		)
(Provision) benefit for income taxes	(335		)	(138		)	1,974
Income (loss) from discontinued operations	(15		)	—			—
Net income (loss)	$	714		$	193		$	2,509

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, 2019			December 31, 2018			December 31, 2019		December 31, 2018
	(Millions)
Atlantic-Gulf	$	16,575		$	16,346		$	741	$	776
Northeast G&P	15,399			14,526			3,973		5,319
West	13,487			13,948			1,521		1,726
Other	1,151			849			—		—
Eliminations (1)	(572		)	(367		)	—		—
Total	$	46,040		$	45,302		$	6,235	$	7,821

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(1)

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