Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Schedule Of Common Stock Outstanding Roll Forward

The following table shows changes in each class of shares:

	Common Stock	Treasury Stock
Balance at January 1, 2018	1,012,261,159	421,222,326
Issued		(3,409,330)
Acquired		26,806,974
Balance at December 31, 2018	1,012,261,159	444,619,970
Issued		(2,797,002)
Acquired		7,529,437
Balance at December 31, 2019	1,012,261,159	449,352,405
Issued		(19,986,868)
Acquired		575,484
Balance at December 31, 2020	1,012,261,159	429,941,021

Schedule of Accumulated Other Comprehensive Income (Loss)

Changes in Accumulated other comprehensive loss (AOCI) by component for the years ended December 31, 2020, 2019 and 2018 were as follows:

	Currency Translation Adjustments	Unrealized Gains and Losses on Certain Investments	Unrealized Gains and Losses on Derivative Instruments	Defined Benefit Pension Plans & Other Postretirement Benefits		Total (1)
Balance at January 1, 2018	($15)	($2)	$54	($16,410)		($16,373)
Other comprehensive (loss)/income before reclassifications	(86)	2	(146)	747		517
Amounts reclassified from AOCI			30	743	(2)	773
Net current period Other comprehensive (loss)/income	(86)	2	(116)	1,490		1,290
Balance at December 31, 2018	($101)	$—	($62)	($14,920)		($15,083)
Other comprehensive income/(loss) before reclassifications	(27)	1	(48)	(1,397)		(1,471)
Amounts reclassified from AOCI			26	375	(2)	401
Net current period Other comprehensive (loss)/income	(27)	1	(22)	(1,022)		(1,070)
Balance at December 31, 2019	($128)	$1	($84)	($15,942)		($16,153)
Other comprehensive (loss)/income before reclassifications	98		14	(1,929)		(1,817)
Amounts reclassified from AOCI			27	810	(2)	837
Net current period Other comprehensive (loss)/income	98		41	(1,119)		(980)
Balance at December 31, 2020	($30)	$1	($43)	($17,061)		($17,133)

(1)    Net of tax.

(2)    Primarily relates to amortization of actuarial losses for the years ended December 31, 2020, 2019, and 2018 totaling $917, $464, and $878 (net of tax of ($52), ($133), and ($242)), respectively. These are included in the net periodic pension cost. See Note 16.