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, 2020		$ 934	$ 8,208	$ 411	$ (822)
Issued for exercise of stock options and vested units		2	16
Share-based compensation			7
Other transactions, net			(9)
Net earnings	$ 681			681
Dividends on common shares				(130)
Other comprehensive income	30				30
Repurchases of common shares (Note 4)		0	0
Balance at end of period at Mar. 31, 2021	$ 9,328	936	8,222	962	(792)
Dividends paid per common share	$ 0.17
Balance at beginning of period at Dec. 31, 2021	$ 10,767	934	8,181	2,131	(479)
Issued for exercise of stock options and vested units		2	11
Share-based compensation			8
Other transactions, net			(7)
Net earnings	771			771
Dividends on common shares				(1,223)
Other comprehensive income	29				29
Repurchases of common shares (Note 4)		(4)	(117)
Balance at end of period at Mar. 31, 2022	$ 10,237	$ 932	$ 8,076	$ 1,679	$ (450)
Dividends paid per common share	$ 1.63