Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Changes in Balance of Accumulated Other Comprehensive Loss, Net of Income Taxes

Changes in the balance of AOCL, net of income taxes, consisted of the following (in millions):


	Postretirement Benefit Plans(a)		Other, net		AOCL
Balance at December 31, 2017	$	(12,559)	$	20	$	(12,539)
Other comprehensive loss before reclassifications	(501)		(105)		(606)
Amounts reclassified from AOCL
Recognition of net actuarial losses	1,455		—		1,455
Amortization of net prior service credits	(253)		—		(253)
Other	—		30		30
Total reclassified from AOCL	1,202		30		1,232
Total other comprehensive (loss) income	701		(75)		626
Reclassification of income tax effects from tax reform(b)	(2,396)		(12)		(2,408)
Balance at December 31, 2018	(14,254)		(67)		(14,321)
Other comprehensive loss before reclassifications	(2,182)		18		(2,164)
Amounts reclassified from AOCL
Recognition of net actuarial losses	1,148		—		1,148
Amortization of net prior service credits	(240)		—		(240)
Other	—		23		23
Total reclassified from AOCL	908		23		931
Total other comprehensive income (loss)	(1,274)		41		(1,233)
Balance at December 31, 2019	(15,528)		(26)		(15,554)
Other comprehensive income before reclassifications	(1,067)		56		(1,011)
Amounts reclassified from AOCL
Recognition of net actuarial losses	689		—		689
Amortization of net prior service credits	(249)		—		(249)
Other	—		4		4
Total reclassified from AOCL	440		4		444
Total other comprehensive income	(627)		60		(567)
Balance at December 31, 2020	$	(16,155)	$	34	$	(16,121)

(a)AOCL related to postretirement benefit plans is shown net of tax benefits of $4.4 billion at December 31, 2020, $4.2 billion at December 31, 2019 and $3.9 billion at December 31, 2018. These tax benefits include amounts recognized on our income tax returns as current deductions and deferred income taxes, which will be recognized on our tax returns in future years. See “Note 10 – Income Taxes” and “Note 12 – Postretirement Benefit Plans” for more information on our income taxes and postretirement benefit plans.

(b)During 2018, we reclassified the impact of the income tax effects related to the Tax Cuts and Jobs Act of 2017 from AOCL to retained earnings by the same amount with zero impact to total equity.