Other Income and Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investment-related interest income	$ 291	$ 309	$ 244
Interest income/(expense) on income taxes	3	3	96
Operating Segments [Member] | Non-Financial Services [Member]
Investment-related interest income	217	233	193
Interest income/(expense) on income taxes	(5)	0	109
Realized and unrealized gains/(losses) on cash equivalents and marketable securities	(9)	46	(9)
Gains/(Losses) on changes in investments in affiliates	139	42	(798)
Gains/(Losses) on extinguishment of debt	0	1	(132)
Royalty income	714	666	559
Other	300	200	154
Total	1,356	1,188	76
Operating Segments [Member] | Financial Services
Investment-related interest income	74	76	51
Interest income/(expense) on income taxes	8	3	(13)
Insurance premiums earned	156	133	125
Other	200	160	185
Total	$ 438	$ 372	$ 348