Other investments (Tables)

3 Months Ended

Mar. 31, 2017

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
	March 31, 2017		December 31, 2016		March 31, 2017		December 31, 2016
Insurance and other	$	6,720	$	6,720	$	15,293	$	14,364
Finance and financial products		1,000		1,000		3,119		2,892
	$	7,720	$	7,720	$	18,412	$	17,256