Wireless Licenses, Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Changes in the carrying amount of Wireless licenses are as follows:


(dollars in millions)
Balance at January 1, 2016	$	86,575
Acquisitions (Note 2)		3
Capitalized interest on wireless licenses		128
Reclassifications, adjustments and other		124

Balance at March 31, 2016	$	86,830

Changes in the carrying amount of Goodwill are as follows:


(dollars in millions)	Wireless		Wireline		Other		Total
Balance at January 1, 2016	$	18,393	$	4,331	$	2,607	$	25,331
Acquisitions (Note 2)		–		–		31		31
Reclassifications, adjustments and other		–		1		1		2

Balance at March 31, 2016	$	18,393	$	4,332	$	2,639	$	25,364

The following table displays the composition of Other intangible assets, net:


	At March 31, 2016							At December 31, 2015
(dollars in millions)	Gross Amount		Accumulated Amortization			Net Amount		Gross Amount		Accumulated Amortization			Net Amount
Customer lists (5 to 14 years)	$	4,136	$	(2,421	)	$	1,715	$	4,139	$	(2,365	)	$	1,774
Non-network internal-use software (3 to 8 years)		14,769		(9,921	)		4,848		14,542		(9,620	)		4,922
Other (5 to 25 years)		2,302		(649	)		1,653		2,220		(578	)		1,642

Total	$	21,207	$	(12,991	)	$	8,216	$	20,901	$	(12,563	)	$	8,338

The amortization expense for Other intangible assets was as follows:

The estimated future amortization expense for Other intangible assets is as follows: