Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

Changes in the balances of each component of accumulated other comprehensive loss were as follows:

	Millions of Dollars
	Defined Benefit Plans		Foreign Currency Translation	Hedging	Accumulated Other Comprehensive Loss
December 31, 2020	$	(809)	25	(5)	(789)
Other comprehensive income (loss) before reclassifications	5		(15)	—	(10)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss and prior service credit	17		—	—	17
Foreign currency translation	—		—	—	—
Hedging	—		—	2	2
Net current period other comprehensive income (loss)	22		(15)	2	9
March 31, 2021	$	(787)	10	(3)	(780)
December 31, 2019	$	(656)	(131)	(1)	(788)
Other comprehensive income (loss) before reclassifications	1		(221)	(7)	(227)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss and prior service credit	19		—	—	19
Foreign currency translation	—		—	—	—
Hedging	—		—	—	—
Net current period other comprehensive income (loss)	20		(221)	(7)	(208)
Other	—		5	—	5
March 31, 2020	$	(636)	(347)	(8)	(991)
* Included in the computation of net periodic benefit cost. See Note 14—Pension and Postretirement Plans, for additional information.