Schedule I - Condensed Financial Information, Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 4,577	$ 3,855	$ 24,032	$ 2,972
Other current assets	1,341	1,236
Total current assets	21,168	20,430
Investments in subsidiaries	0	0
Other noncurrent assets	2,379	1,630
TOTAL ASSETS	154,847	153,226
Liabilities:
Short-term debt	4,712	2,955
Total current liabilities	34,447	31,895
Long-term debt	34,041	39,523
Other non-current liabilities	3,919	3,470
TOTAL LIABILITIES	110,114	112,154
Shareholders Equity:
Common stock (shares issued, 296; authorized, 600)	4	4
Additional paid-in capital	28,115	27,751
Accumulated other comprehensive loss	(858)	(1,711)
Retained earnings	19,185	15,088
Less: treasury stock, at cost	(1,750)	(104)
Total shareholders' equity	44,696	41,028
Total liabilities and shareholders' equity	$ 154,847	$ 153,226