Other investments (Tables)

12 Months Ended

Dec. 31, 2015

Investments, All Other Investments [Abstract]

Schedule of other investments

Other investments are classified as available-for-sale and carried at fair value and are shown in our Consolidated Balance Sheets as follows (in millions).

	Cost				Fair Value
	December 31,				December 31,
	2015		2014		2015		2014
Insurance and other	$	9,970	$	9,970	$	15,998	$	16,346
Finance and financial products		3,052		3,052		5,719		5,978
	$	13,022	$	13,022	$	21,717	$	22,324