pre_text: 13. Intangible assets continued Goodwill has been allocated to three CGUs, which align with the reportable operating segments, as follows:
table: 2019 2018
table: $ million $ million
table: Networks & Security 73.4 72.0
table: Lifecycle Service Assurance 37.6 37.6
table: Connected Devices 46.1 46.1
table: 157.1 155.7
question: Analyse this data from a financial earnings document. What was the change in the total intangible assets?