The components of investments, including associated derivatives, were as follows:


(In millions)		Cost Basis	Unrealized Gains		Unrealized Losses			Recorded Basis		Cash and Cash Equivalents		Short-term Investments		Equity and Other Investments


December 31, 2017

Cash	$	3,877	$	0	$	0		$	3,877	$	3,877	$	0	$	0
Mutual funds		1,080		0		0			1,080		1,080		0		0
Commercial paper		1,533		0		0			1,533		904		629		0
Certificates of deposit		1,832		0		0			1,832		1,642		190		0
U.S. government and agency securities		119,085		34		(746	)		118,373		4,465		113,908		0
Foreign government bonds		6,605		2		(12	)		6,595		891		5,704		0
Mortgage- and asset-backed securities		3,952		7		(7	)		3,952		0		3,952		0
Corporate notes and bonds		5,172		48		(14	)		5,206		0		5,206		0
Municipal securities		284		47		0			331		0		331		0
Common and preferred stock		1,697		1,707		(6	)		3,398		0		0		3,398
Other investments		564		0		0			564		0		1		563


Total	$	145,681	$	1,845	$	(785	)	$	146,741	$	12,859	$	129,921	$	3,961


(In millions)		Cost Basis	Unrealized Gains		Unrealized Losses			Recorded Basis		Cash and Cash Equivalents		Short-term Investments		Equity and Other Investments


June 30, 2017

Cash	$	3,624	$	0	$	0		$	3,624	$	3,624	$	0	$	0
Mutual funds		1,478		0		0			1,478		1,478		0		0
Commercial paper		319		0		0			319		69		250		0
Certificates of deposit		1,358		0		0			1,358		972		386		0
U.S. government and agency securities		112,119		85		(360	)		111,844		16		111,828		0
Foreign government bonds		5,276		2		(13	)		5,265		1,504		3,761		0
Mortgage- and asset-backed securities		3,921		14		(4	)		3,931		0		3,931		0
Corporate notes and bonds		4,786		61		(12	)		4,835		0		4,835		0
Municipal securities		284		43		0			327		0		327		0
Common and preferred stock		2,472		3,062		(34	)		5,500		0		0		5,500
Other investments		523		0		0			523		0		0		523


Total	$	136,160	$	3,267	$	(423	)	$	139,004	$	7,663	$	125,318	$	6,023

Investments with continuous unrealized losses for less than 12 months and 12 months or greater and their related fair values were as follows:

	Less than 12 Months					12 Months or Greater								Total Unrealized Losses


(In millions)		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Total Fair Value


December 31, 2017

U.S. government and agency securities	$	101,552	$	(672	)	$	2,855	$	(74	)	$	104,407	$	(746	)
Foreign government bonds		2,537		(1	)		34		(11	)		2,571		(12	)
Mortgage- and asset-backed securities		1,317		(3	)		338		(4	)		1,655		(7	)
Corporate notes and bonds		1,118		(6	)		439		(8	)		1,557		(14	)
Common and preferred stock		17		0			36		(6	)		53		(6	)


Total	$	106,541	$	(682	)	$	3,702	$	(103	)	$	110,243	$	(785	)

	Less than 12 Months					12 Months or Greater								Total Unrealized Losses


(In millions)		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Total Fair Value


June 30, 2017

U.S. government and agency securities	$	87,558	$	(348	)	$	371	$	(12	)	$	87,929	$	(360	)
Foreign government bonds		4,006		(2	)		23		(11	)		4,029		(13	)
Mortgage- and asset-backed securities		1,068		(3	)		198		(1	)		1,266		(4	)
Corporate notes and bonds		669		(8	)		177		(4	)		846		(12	)
Common and preferred stock		69		(6	)		148		(28	)		217		(34	)


Total	$	93,370	$	(367	)	$	917	$	(56	)	$	94,287	$	(423	)