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Condensed consolidated statements of cash flows - additional details (Tables)
 6 Months Ended
Jun. 30, 2020
Cash Flow Statement [Abstract]  
Depreciation, amortization, impairments and fair value adjustments Depreciation, amortization, impairments and fair value adjustments
 
 
Six months ended June 30
($ millions)
 
2020

 
2019

 
 
 
 
 
Property, plant & equipment
 
142

 
129

Right-of-use assets
 
38

 
29

Intangible assets
 
602

 
536

Financial assets
 
(3
)
 
15

Total
 
779

 
709
Change in net current assets and other operating cash flow items Change in net current assets and other operating cash flow items
 
 
Six months ended June 30
($ millions)
 
2020

 
2019

 
 
 
 
 
(Increase) in inventories
 
(192
)
 
(57
)
Decrease/(increase) in trade receivables
 
185

 
(122
)
Increase/(decrease) in trade payables
 
(71
)
 
134

Net change in other current assets
 
77

 
(73
)
Net change in other current liabilities
 
(152
)
 
(64
)
Total
 
(153
)
 
(182
)