Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2021

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of components of accumulated other comprehensive loss

Components of accumulated other comprehensive loss
(in millions)	Pension and Other Benefit Liabilities(2)		Other		Total
Balance at January 1, 2021 (net of tax effect of $1,764)	$	(9,078)	$	40	$	(9,038)
Reclassifications into earnings (net of tax effect of $47)(1)	156		—		156
Balance at June 30, 2021 (net of tax effect of $1,717)	$	(8,922)	$	40	$	(8,882)

Balance at January 1, 2020 (net of tax effect of $1,549)	$	(8,095)	$	106	$	(7,989)
Changes in value (net of tax effect of $4)	(6)		8		2
Reclassifications into earnings (net of tax effect of $123)(1)	133		(83)		50
Balance at June 30, 2020 (net of tax effect of $1,431)	$	(7,968)	$	31	$	(7,937)

(1)Amounts reclassified from AOCI for pension and other benefit liabilities are recorded in miscellaneous, net in non-operating expense in our income statement.

(2)Includes approximately $750 million of deferred income tax expense primarily related to pension and other benefit obligations that will not be recognized in net income until these obligations are fully extinguished. We consider all income sources, including other comprehensive income, in determining the amount of tax benefit allocated to results from operations.