At the end of 2015 and 2014, cash, cash equivalents and current marketable securities were comprised of:



(Dollars in Millions)	2015
	Carrying Amount		Unrecognized Gain	Unrecognized Loss		Estimated Fair Value	Cash Equivalents		Current Marketable Securities
Cash	$	1,832	—	—		1,832	1,832		—
U.S. Gov't Securities⁽¹⁾	14,641		1	(2	)	14,640	650		13,991
Other Sovereign Securities⁽¹⁾	2,122		—	—		2,122	933		1,189
U.S. Reverse repurchase agreements⁽¹⁾	1,579		—	—		1,579	1,579		—
Other Reverse repurchase agreements⁽¹⁾	2,200		—	—		2,200	2,200		—
Corporate debt securities⁽¹⁾	2,941		—	—		2,941	1,793		1,148
Money market funds	3,855		—	—		3,855	3,855		—
Time deposits⁽¹⁾	890		—	—		890	890		—


	Carrying Amount		Unrealized Gain	Unrealized Loss		Estimated Fair Value
Gov't Securities	7,307		1	(34	)	7,274	—		7,274
Corporate debt securities	1,046		1	(5	)	1,042	—		1,042
Available for Sale⁽²⁾	$	8,353	2	(39	)	8,316	—		8,316

Total cash, cash equivalents and current marketable securities							$	13,732	24,644



(Dollars in Millions)	2014
	Carrying Amount		Unrecognized Gain	Unrecognized Loss		Estimated Fair Value	Cash Equivalents		Current Marketable Securities
Cash	$	2,336	—	—		2,336	2,336		—
U.S. Gov't Securities⁽¹⁾	16,345		1	(1	)	16,345	1,950		14,395
Other Sovereign Securities⁽¹⁾	4,265		—	—		4,265	978		3,287
U.S. Reverse repurchase agreements⁽¹⁾	4,387		—	—		4,387	4,387		—
Other Reverse repurchase agreements⁽¹⁾	2,348		—	—		2,348	2,348		—
Corporate debt securities⁽¹⁾	1,343		—	—		1,343	459		884
Money market funds	1,352		—	—		1,352	1,352		—
Time deposits⁽¹⁾	$	713	—	—		713	713		—
Total cash, cash equivalents and current marketable securities							$	14,523	18,566