Investments and Advances (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Affiliates [Member]
Schedule of Investments [Line Items]
Total revenues	$ 59,253	$ 71,389	$ 123,003
Income before income tax expense	6,587	13,129	20,609
Net income attributable to affiliates	5,127	10,649	14,758
Current assets	33,406	27,162	35,662
Noncurrent assets	75,258	71,650	70,817
Current liabilities	24,793	20,559	25,308
Noncurrent liabilities	22,671	18,560	17,983
Total net equity	61,200	59,693	63,188
Chevron [Member]
Schedule of Investments [Line Items]
Total revenues	27,787	33,492	58,937
Income before income tax expense	3,670	6,279	9,968
Net income attributable to affiliates	2,876	4,691	7,237
Current assets	13,743	10,657	13,465
Noncurrent assets	28,854	26,607	26,053
Current liabilities	8,996	7,351	9,588
Noncurrent liabilities	4,255	3,909	4,211
Total net equity	$ 29,346	$ 26,004	$ 25,719