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Inventories (Tables)

12 Months Ended

Dec. 31, 2020

Notes to Consolidated Financial Statements [Abstract]

Inventories

	As at December 31
	2020	2019
	$ millions	$ millions

Finished products	807	800
Work in progress	263	326
Raw materials	207	176
Spare parts	125	127
Total inventories	1,402	1,429
Of which:
Non-current inventories. mainly raw materials (presented in non-current assets)	152	117
Current inventories	1,250	1,312