Other Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2019

Other Income and Expenses [Abstract]

Schedule of Other Nonoperating Income (Expense) [Table Text Block]

The amounts included in Other income/(loss), net for the years ended December 31 were as follows (in millions):

	2017			2018		2019
Net periodic pension and OPEB income/(cost), excluding service cost	$	1,757		$	786	$	(1,602	)
Investment-related interest income	459			667		809
Interest income/(expense) on income taxes	2			33		(29		)
Realized and unrealized gains/(losses) on cash equivalents, marketable securities, and other investments	(23		)	115		144
Gains/(Losses) on changes in investments in affiliates	14			42		20
Gains/(Losses) on extinguishment of debt	—			—		(55		)
Royalty income	678			491		381
Other	380			113		106
Total	$	3,267		$	2,247	$	(226	)