Prior Period's Figures	9 Months Ended
Sep. 30, 2019
Prior Period Adjustment [Abstract]
Prior Period's Figures	18. Prior Period's Figures In the current year, Variable consideration receivable from contracts and Investment in equity securities are separate lines on the condensed consolidated balance sheet and have been removed from Other Assets. In addition, due to the adoption of ASU 2017-07, non-service pension costs are now recorded in the Retirement benefits non-service expense line item in the condensed consolidated statement of operations. Prior year comparatives, where applicable, have been reclassified to reflect these changes.

Prior Period's Figures

9 Months Ended

Sep. 30, 2019

18. Prior Period's Figures

In the current year, Variable consideration receivable from contracts and Investment in equity securities are separate lines on the condensed consolidated balance sheet and have been removed from Other Assets. In addition, due to the adoption of ASU 2017-07, non-service pension costs are now recorded in the Retirement benefits non-service expense line item in the condensed consolidated statement of operations. Prior year comparatives, where applicable, have been reclassified to reflect these changes.