Changes in property and equipment account for the years ended December 31, 2017 and 2016 are as follows:

	Cable and wire facilities			Central office equipment			Cellular facilities			Buildings and improvements			Vehicles, aircraft, furniture and other network equipment			Communi cations satellite			Information origination and termination equipment			Land and land improvements			Property under construction			Total
	(in million pesos)
As at December 31, 2015
Cost		187,195			112,867			177,118			27,162			53,797			966			12,962			3,441			57,410			632,918
Accumulated depreciation, impairment and amortization		(138,958	)		(93,336	)		(129,040	)		(17,667	)		(45,628	)		(966	)		(11,278	)		(263	)		—			(437,136	)
Net book value		48,237			19,531			48,078			9,495			8,169			—			1,684			3,178			57,410			195,782
Year Ended December 31, 2016
Net book value at beginning of the year		48,237			19,531			48,078			9,495			8,169			—			1,684			3,178			57,410			195,782
Additions		3,419			357			19,225			374			3,358			—			674			7			15,668			43,082
Disposals/Retirements		(11	)		(8	)		(97	)		(85	)		(251	)		—			—			(15	)		(69	)		(536	)
Reclassifications (Note 13)		(2	)		285			(196	)		33			(594	)		—			—			4			(219	)		(689	)
Transfers and others		6,315			3,189			10,660			332			1,258			—			963			3			(22,720	)		—
Translation differences charged directly to cumulative translation adjustments		4			1			—			—			1			—			—			—			—			6
Depreciation of revaluation increment on investment properties transferred to property and equipment charged to other comprehensive income		—			—			—			(2	)		—			—			—			—			—			(2	)
Depreciation and amortization		(9,932	)		(4,687	)		(13,278	)		(1,225	)		(4,268	)		—			(1,063	)		(2	)		—			(34,455	)
Net book value at end of the year		48,030			18,668			64,392			8,922			7,673			—			2,258			3,175			50,070			203,188

As at December 31, 2016
Cost		196,652			115,461			202,581			25,914			55,973			966			14,596			3,440			50,070			665,653
Accumulated depreciation, impairment and amortization		(148,622	)		(96,793	)		(138,189	)		(16,992	)		(48,300	)		(966	)		(12,338	)		(265	)		—			(462,465	)
Net book value		48,030			18,668			64,392			8,922			7,673			—			2,258			3,175			50,070			203,188
Year Ended December 31, 2017
Net book value at beginning of the year		48,030			18,668			64,392			8,922			7,673			—			2,258			3,175			50,070			203,188
Additions (Note 4)		3,410			687			6,512			159			2,682			—			1,878			1			24,970			40,299
Disposals/Retirements		(8	)		—			(123	)		(38	)		(316	)		—			—			—			(134	)		(619	)
Reclassifications (Note 13)		5			3			—			3			(7	)		—			—			14			(143	)		(125	)
Impairment losses recognized during the year (Note 5)		—			—			(389	)		—			—			—			—			—			(3,524	)		(3,913	)
Transfers and others		7,612			3,945			8,031			1,285			1,959			—			1,343			3			(24,178	)		—
Translation differences charged directly to cumulative translation adjustments		—			(1	)		—			(1	)		(4	)		—			—			—			—			(6	)
Depreciation of revaluation increment on investment properties transferred to property and equipment charged to other comprehensive income		—			—			—			(2	)		—			—			—			—			—			(2	)
Depreciation and amortization		(11,594	)		(5,340	)		(28,242	)		(1,274	)		(4,106	)		—			(1,357	)		(2	)					(51,915	)
Net book value at end of the year		47,455			17,962			50,181			9,054			7,881			—			4,122			3,191			47,061			186,907
As at December 31, 2017
Cost		207,220			119,642			209,504			27,076			58,964			—			17,595			3,458			47,061			690,520
Accumulated depreciation, impairment and amortization		(159,765	)		(101,680	)		(159,323	)		(18,022	)		(51,083	)		—			(13,473	)		(267	)		—			(503,613	)
Net book value		47,455			17,962			50,181			9,054			7,881			—			4,122			3,191			47,061			186,907