Construction in Progress (Tables)

12 Months Ended

Dec. 31, 2019

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Summary of Construction in Progress

	2019			2018
	Million			Million
As of January 1		72,180			78,112
Additions		163,312			163,962
Transferred to property, plant and equipment		(167,514	)		(169,894	)
As of December 31		67,978			72,180