Financial and Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments

Consolidated Balance Sheet: Fair Value of Derivatives Not Designated as Hedging Instruments

				At December 31
Type of Contract	Balance Sheet Classification	2015		2014
Commodity	Accounts and notes receivable, net	$	200	$	401
Commodity	Long-term receivables, net	5		12
Total Assets at Fair Value		$	205	$	413
Commodity	Accounts payable	$	51	$	57
Commodity	Deferred credits and other noncurrent obligations	2		27
Total Liabilities at Fair Value		$	53	$	84

Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments

Consolidated Statement of Income: The Effect of Derivatives Not Designated as Hedging Instruments

		Gain/(Loss)
Type of Derivative	Statement of	Year ended December 31
Contract	Income Classification	2015			2014			2013
Commodity	Sales and other operating revenues	$	277		$	553		$	(108	)
Commodity	Purchased crude oil and products	30			(17		)	(77		)
Commodity	Other income	(3		)	(32		)	(9		)
		$	304		$	504		$	(194	)

Consolidated Balance Sheet: The Effect of Netting Derivative Assets and Liabilities

The table below represents gross and net derivative assets and liabilities subject to netting agreements on the Consolidated Balance Sheet at December 31, 2015 and December 31, 2014.

Consolidated Balance Sheet: The Effect of Netting Derivative Assets and Liabilities

	Gross Amount Recognized		Gross Amounts Offset		Net Amounts Presented		Gross Amounts Not Offset		Net Amount
At December 31, 2015
Derivative Assets	$	2,459	$	2,254	$	205	$	—	$	205
Derivative Liabilities	$	2,307	$	2,254	$	53	$	—	$	53
At December 31, 2014
Derivative Assets	$	4,004	$	3,591	$	413	$	7	$	406
Derivative Liabilities	$	3,675	$	3,591	$	84	$	—	$	84