Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2021

Accrued Liabilities, Current [Abstract]

Accrued Liabilities [Table Text Block]

	December 31,
	2021		2020
	(Millions)
Interest on debt	$	277	$	271
Employee costs	214		149
Derivative liabilities	166		4
Contract liabilities	134		129
Asset retirement obligations (Note 10)	75		63
Operating lease liabilities (Note 14)	23		28
Other, including accrued loss contingencies	312		300
	$	1,201	$	944