Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents the changes in AOCI by component, net of income taxes:

	Cash Flow Hedges		Foreign Currency Translation		Pension and Other Post Retirement Benefits		Total
	(Millions)
Balance at December 31, 2019	$	(2)	$	(1)	$	(196)	$	(199)
Other comprehensive income (loss) before reclassifications	(2)		—		81		79
Amounts reclassified from accumulated other comprehensive income (loss)	1		—		23		24
Other comprehensive income (loss)	(1)		—		104		103
Balance at December 31, 2020	$	(3)	$	(1)	$	(92)	$	(96)

Reclassifications Out Of Accumulated Other Comprehensive Income [Table Text Block]

Reclassifications out of AOCI are presented in the following table by component for the year ended December 31, 2020:

Component	Reclassifications		Classification
	(Millions)
Cash flow hedges:
Energy commodity contracts	$	1	Product sales
Pension and other postretirement benefits:
Amortization of actuarial (gain) loss and net actuarial loss from settlements included in net periodic benefit cost (credit)	30		Other income (expense) – net below Operating income (loss)
Income tax benefit	(7)		Provision (benefit) for income taxes
Reclassifications during the period	$	24