|In CHF million, except where indicated||2019||2018||Change|
|IT, Network & Infrastructure||85||79||7.6%|
|Other Operating Segments||929||909||2.2%|
|Revenue from external customers||11,453||11,714||–2.2%|
|Operating income before depreciation and amortisation (EBITDA)|
|IT, Network & Infrastructure||(1,154)||(1,138)||1.4%|
|Other Operating Segments||188||197||–4.6%|
|Reconciliation pension cost 2||(47)||(60)||–21.7%|
|Reconciliation lease expense (IAS 17) 3||–||(207)||–100.0%|
|Operating income before depreciation and amortisation (EBITDA)||4,358||4,213||3.4%|
1 Incl. intersegment recharges of services performed by other network providers.
2 Operating income of segments includes ordinary employer contributions as pension fund expense. The difference to the pension cost according to IAS 19 is recognised as a reconciliation item.
3 Swisscom has been applying IFRS 16 "Leases" since 1 January 2019. The operating result before depreciation and amortisation (EBITDA) of the segments for 2018 does not include any expenses for operating leases in accordance with IAS 17. The 2018 expense for operating leases in accordance with IAS 17 is shown as a reconciliation item.
The IT, Network & Infrastructure segment does not charge any network costs to other segments, nor does Group Headquarters charge any management fees to other segments. The remaining services between the segments are recharged at market prices. Network costs in Switzerland are budgeted, monitored and controlled by the IT, Network & Infrastructure division, which is managed as a cost centre. For this reason, no revenue is credited to the IT, Network & Infrastructure segment within the segment reporting, with the exception of the rental and administration of buildings and vehicles. The results of the segments “Residential Customers”, “Enterprise Customers” and “Wholesale” correspond to a contribution margin prior to network costs.