CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Common shares:	Other capital:	Retained earnings (accumulated deficit):	Accumulated other comprehensive loss:
Balance at beginning of period at Dec. 31, 2019		$ 932	$ 8,152	$ (3)	$ (904)
Issued for exercise of stock options and vested units		1	6
Share-based compensation	$ 15
Other transactions, net			(7)
Net earnings	222			222
Dividends on common shares				(256)
Other comprehensive income	44				44
Balance at end of period at Jun. 30, 2020	$ 8,202	933	8,166	(37)	(860)
Dividends paid per common share	$ 0.34
Balance at beginning of period at Mar. 31, 2020		933	8,159	(109)	(901)
Issued for exercise of stock options and vested units		0	0
Share-based compensation	$ 8
Other transactions, net			(1)
Net earnings	72			72
Dividends on common shares				0
Other comprehensive income	41				41
Balance at end of period at Jun. 30, 2020	$ 8,202	933	8,166	(37)	(860)
Dividends paid per common share	$ 0
Balance at beginning of period at Dec. 31, 2020	$ 8,731	934	8,208	411	(822)
Issued for exercise of stock options and vested units		3	43
Share-based compensation	15
Other transactions, net			(8)
Net earnings	1,709			1,709
Dividends on common shares				(259)
Other comprehensive income	166				166
Balance at end of period at Jun. 30, 2021	$ 10,400	937	8,258	1,861	(656)
Dividends paid per common share	$ 0.34
Balance at beginning of period at Mar. 31, 2021		936	8,222	962	(792)
Issued for exercise of stock options and vested units		1	27
Share-based compensation	$ 8
Other transactions, net			1
Net earnings	1,028			1,028
Dividends on common shares				(129)
Other comprehensive income	136				136
Balance at end of period at Jun. 30, 2021	$ 10,400	$ 937	$ 8,258	$ 1,861	$ (656)
Dividends paid per common share	$ 0.17