Cash, Cash Equivalents, and Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets Measured on Recurring Basis [Table Text Block]

The following table categorizes the fair values of cash and cash equivalents and marketable securities measured at fair value on a recurring basis on our balance sheet (in millions):

	Fair Value Level	March 31, 2016		December 31, 2015
Cash and cash equivalents
U.S. government	1	$	450	$	—
U.S. government agencies	2	25		—
Non-U.S. government and agencies	2	500		266
Corporate debt	2	50		—
Total marketable securities classified as cash equivalents		1,025		266
Cash, time deposits and money market funds		9,325		8,620
Total cash and cash equivalents		$	10,350	$	8,886
Marketable securities
U.S. government	1	$	1,594	$	298
U.S. government agencies	2	1,746		1,169
Non-U.S. government and agencies	2	1,194		832
Corporate debt	2	294		384
Other marketable securities	2	44		40
Total marketable securities		$	4,872	$	2,723