Intangible assets (Tables)

12 Months Ended

Dec. 31, 2022

Intangible Assets

Statement of financial position details

	December 31, 2022							December 31, 2021
	Cost		Accumulated amortization			Net		Cost		Accumulated amortization			Net
Intangible right arising from:
Concession agreements – equity value		722,730		(223,404	)		499,326		696,728		(205,671	)		491,057
Concession agreements – economic value		1,585,271		(933,232	)		652,039		1,497,968		(816,527	)		681,441
Program contracts		26,875,408		(8,537,949	)		18,337,459		24,804,170		(7,652,149	)		17,152,021
Program contracts – commitments		1,709,757		(444,765	)		1,264,992		1,709,757		(391,800	)		1,317,957
Services contracts – São Paulo		25,584,703		(7,714,252	)		17,870,451		22,834,803		(6,676,032	)		16,158,771
Software license of use		1,249,881		(654,477	)		595,404		1,133,833		(535,099	)		598,734
Right of use – other assets		170,921		(95,869	)		75,052		173,715		(69,862	)		103,853
Right of use - investments		26,148		—			26,148		—		—			—
Total		57,924,819		(18,603,948	)		39,320,871		52,850,974		(16,347,140	)		36,503,834

The obligations assumed by the Company as of December 31, 2021 and 2020 are shown in the table below

	December 31, 2021		Addition		Transfer of contract assets		Transfers			Write-offs and disposals			Amortization			December 31, 2022
Intangible right arising from:
Concession agreements – equity value (*)		491,057		—		27,166		(144	)		(115	)		(18,638	)		499,326
Concession agreements – economic value		681,441		13		48,428		33,576			(9	)		(111,410	)		652,039
Program contracts (*)		17,152,021		6,635		2,132,675		2,944			(2,800	)		(954,016	)		18,337,459
Program contracts – commitments		1,317,957		—		—		—			—			(52,965	)		1,264,992
Services contracts – São Paulo		16,158,771		208		2,855,284		(41,133	)		(6,063	)		(1,096,616	)		17,870,451
Software license of use		598,734		214		115,811		6			—			(119,361	)		595,404
Right of use – Other assets		103,853		42,182		—		—			(67	)		(70,916	)		75,052
Right of use – Investments		—		26,148		—		—			—			—			26,148
Total		36,503,834		75,400		5,179,364		(4,751	)		(9,054	)		(2,423,922	)		39,320,871

(*) As of December 31, 2022, intangible assets include leases recognized before December 31, 2018 in accordance with IAS 17 amounting to R$ 222,572 - R$ 54,356 recognized as concession agreements – equity value and R$ 168,216 recognized as program contracts (R$ 245,681 as of December 31, 2021 – R$ 65,012 recognized as concession agreements – equity value and R$ 180,669 recognized as program contracts).

	December 31, 2020		Addition		Transfer of contract assets		Transfers			Write-offs and disposals			Amortization			December 31, 2021
Intangible right arising from:
Concession agreements – equity value (*)		483,775		—		24,656		467			(148	)		(17,693	)		491,057
Concession agreements – economic value		734,665		—		52,275		(14	)		(242	)		(105,243	)		681,441
Program contracts (*)		16,360,307		17,690		1,640,733		13,744			(8,840	)		(871,613	)		17,152,021
Program contracts – commitments		1,370,923		—		—		—			—			(52,966	)		1,317,957
Services contracts – São Paulo		14,872,604		14,950		2,307,851		(13,827	)		(13,745	)		(1,009,062	)		16,158,771
Software license of use		540,625		—		155,748		—			—			(97,639	)		598,734
Right of use – Other assets		42,676		140,321		—		—			(4,103	)		(75,041	)		103,853
Total		34,405,575		172,961		4,181,263		370			(27,078	)		(2,229,257	)		36,503,834

(*) As of December 31, 2021, intangible assets include leases recognized before December 31, 2018 in accordance with IAS 17 amounting to R$ 245,681 - R$ 65,012 recognized as concession agreements – equity value and R$ 180,669 recognized as program contracts (R$ 269,561 as of December 31, 2020 – R$ 76,454 recognized as concession agreements – equity value and R$ 193,107 recognized as program contracts).

	December 31, 2019		Addition		Contract renewal			Transfer of contract assets		Transfers			Write-offs and disposals			Amortization			December 31, 2020
Intangible right arising from:
Concession agreements – equity value (*)		1,494,853		1		(1,031,830	)		47,154		1,440			(858	)		(26,985	)		483,775
Concession agreements – economic value		712,852		—		—			113,320		(1,403	)		(42	)		(90,062	)		734,665
Program contracts (*)		13,819,700		303,472		1,031,830			2,075,268		(51,570	)		(5,423	)		(812,970	)		16,360,307
Program contracts – commitments		1,364,875		58,323		—			—		—			—			(52,275	)		1,370,923
Services contracts – São Paulo		14,390,763		20,940		—			1,382,656		(23,645	)		(9,990	)		(888,120	)		14,872,604
Software license of use		471,706		—		—			70,016		78,169			—			(79,266	)		540,625
Right of use – Other assets		70,698		28,549		—			—		—			—			(56,571	)		42,676
Total		32,325,447		411,285		—			3,688,414		2,991			(16,313	)		(2,006,249	)		34,405,575

(*) As of December 31, 2020, intangible assets include leases recognized before December 31, 2018 in accordance with IAS 17 amounting to R$ 269,561 - R$ 76,454 recognized as concession agreements – equity value and R$ 193,107 recognized as program contracts (R$ 292,824 as of December 31, 2019 – R$ 87,266 recognized as concession agreements – equity value and R$ 205,558 recognized as program contracts).

Intangible assets

	December 31, 2022		December 31, 2021
Alto Tietê		251,545		269,062
São Lourenço		2,725,900		2,895,798
Total		2,977,445		3,164,860

The obligations assumed by the Company

	December 31, 2022						December 31, 2021
	Current liabilities		Noncurrent liabilities		Total liabilities		Current liabilities		Noncurrent liabilities		Total liabilities
Alto Tietê		91,782		36,645		128,427		69,442		102,873		172,315
São Lourenço		130,631		2,700,123		2,830,754		73,315		2,814,555		2,887,870
Total		222,413		2,736,768		2,959,181		142,757		2,917,428		3,060,185

Right of use

Nature	December 31, 2022			December 31, 2021
Leases - Contract Assets		276,893			276,893
Leases - Concession Agreements and Program Contracts
Cost		405,431			405,446
Accumulated amortization		(182,859	)		(159,765	)
(=) Net		222,572			245,681
Other assets (*)
Vehicles		153,384			142,003
Properties		11,711			6,570
Equipment		5,826			9,841
Other assets		—			15,301
Accumulated amortization		(95,869	)		(69,862	)
(=) Net		75,052			103,853
Right of use		574,517			626,427

(*) From January to December 2022, costs and accumulated amortization totaling R$ 44,976, referring to expired rights of use, were written off (from January to December 2021 – R$ 108,406).

The table below shows the impact in the income statements

Impact in the income statement
	December 31, 2022			December 31, 2021			December 31, 2020
Right-of-use amortization		(105,551	)		(75,041	)		(79,834	)
Financial result – interest expenses		(72,050	)		(68,730	)		(62,956	)
Short-term and low-value lease expenses		(25,365	)		(22,467	)		(13,845	)
Decrease of the income of the year		(202,966	)		(166,238	)		(156,635	)