Earnings per share and shares outstanding (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share And Shares Outstanding [Line Items]

Disclosure Of Earnings Per Share Explanatory

	As of or for the year ended
	31.12.19	31.12.18	31.12.17
Basic earnings (USD million)
Net profit / (loss) attributable to shareholders	4,304	4,516	969
Diluted earnings (USD million)
Net profit / (loss) attributable to shareholders	4,304	4,516	969
Less: (profit) / loss on own equity derivative contracts	0	(2)	0
Net profit / (loss) attributable to shareholders for diluted EPS	4,304	4,514	969
Weighted average shares outstanding
Weighted average shares outstanding for basic EPS1	3,663,278,238	3,730,297,877	3,716,174,261
Effect of dilutive potential shares resulting from notional shares, in-the-money options and warrants outstanding	103,881,600	111,271,269	120,540,272
Weighted average shares outstanding for diluted EPS	3,767,159,838	3,841,569,146	3,836,714,533
Earnings per share (USD)
Basic	1.17	1.21	0.26
Diluted	1.14	1.18	0.25
Shares outstanding
Shares issued	3,859,055,395	3,855,634,749	3,853,096,603
Treasury shares	243,021,296	166,467,802	132,301,550
Shares outstanding	3,616,034,099	3,689,166,947	3,720,795,053
1 The weighted average shares outstanding for basic EPS are calculated by taking the number of shares at the beginning of the period, adjusted by the number of shares acquired or issued during the period, multiplied by a time-weighted factor for the period outstanding. As a result, balances are affected by the timing of acquisitions and issuances during the period.

Disclosure of potentially dilutive instruments [text block]

Number of shares	31.12.19	31.12.18	31.12.17
Potentially dilutive instruments
Employee share-based compensation awards1		3,605,198	24,124,341
Other equity derivative contracts	21,632,879	11,912,450	9,122,496
Total	21,632,879	15,517,648	33,246,837
1 The last remaining option awards and stock appreciation rights expired during 2019.