Fair Value Measurements and Guarantees (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Assets and Liabilities Measured On Recurring Basis [Table Text Block]

The following table presents, by level within the fair value hierarchy, certain of our significant financial assets and liabilities. The carrying values of cash and cash equivalents, accounts receivable, margin deposits, and accounts payable approximate fair value because of the short-term nature of these instruments. Therefore, these assets and liabilities are not presented in the following table.


					Fair Value Measurements Using
	Carrying Amount		Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(Millions)
Assets (liabilities) at June 30, 2021:
Measured on a recurring basis:
ARO Trust investments	$	257	$	257	$	257	$	—	$	—




Additional disclosures:

Long-term debt, including current portion	(23,234)		(27,643)		—		(27,643)		—
Guarantees	(40)		(26)		—		(10)		(16)

Assets (liabilities) at December 31, 2020:
Measured on a recurring basis:
ARO Trust investments	$	235	$	235	$	235	$	—	$	—



Additional disclosures:
Long-term debt, including current portion	(22,344)		(27,043)		—		(27,043)		—
Guarantees	(40)		(27)		—		(11)		(16)

Fair Value Measurements, Nonrecurring [Table Text Block]

The following table presents impairments of equity-method investments associated with certain nonrecurring fair value measurements within Level 3 of the fair value hierarchy.


					Impairments
					Six Months Ended June 30,
	Segment	Date of Measurement	Fair Value		2021		2020
			(Millions)





Impairment of equity-method investments:
RMM (1)	West	March 31, 2020	$	557			$	243
Brazos Permian II (1)	West	March 31, 2020	—				193
Caiman II (2)	Northeast G&P	March 31, 2020	191				229
Appalachia Midstream Investments (2)	Northeast G&P	March 31, 2020	2,700				127
Aux Sable (2)	Northeast G&P	March 31, 2020	7				39
Laurel Mountain (2)	Northeast G&P	March 31, 2020	236				10
Discovery (2)	Transmission & Gulf of Mexico	March 31, 2020	367				97





Impairment of equity-method investments					$	—	$	938

_______________

(1)Following the previously described declining market conditions during the first quarter of 2020, we evaluated these investments for other-than-temporary impairment. The fair value was measured using an income approach. Both investees operate in primarily oil-driven basins where significant expected reductions in producer activities led to reduced estimates of expected future cash flows. Our fair value estimates also reflected discount rates of approximately 17 percent for these investments. We also considered any debt held at the investee level, and its impact to fair value. The industry weighted-average discount rates utilized were significantly influenced by the market declines previously discussed.

(2)Following the previously described declining market conditions during the first quarter of 2020, we evaluated these investments for other-than-temporary impairment. The impairments within our Northeast G&P segment are primarily associated with operations in wet-gas areas where producer drilling activities are influenced by NGL prices which historically trend with crude oil prices. The fair values of our investments in Caiman II and Aux Sable Liquid Products LP (Aux Sable) were estimated using a market approach, reflecting valuation multiples ranging from 5.0x to 6.2x EBITDA (weighted-average 6.0x). The fair values of the other investments, including gathering systems that are part of Appalachia Midstream Investments, were estimated using an income approach, with discount rates ranging from 9.7 percent to 13.5 percent (weighted-average 12.6 percent). We also considered any debt held at the investee level, and its impact to fair value. The assumed valuation multiples and industry weighted-average discount rates utilized were both significantly influenced by the market declines previously discussed.