Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Retained earnings	Accumulated other comprehensive income	Common stock	Noncontrolling interest
Balance at Mar. 31, 2014	$ 10,393	$ 8,306	$ 27	$ 1,366	$ 694
Net income	766	717			49
Other comprehensive loss	(75)		(39)		(36)
Balance at Dec. 31, 2014	11,084	9,023	(12)	1,366	707
Balance at Mar. 31, 2015	11,190	9,248	(75)	1,366	651
Net income	690	646			44
Other comprehensive loss	(117)		(61)		(56)
Balance at Dec. 31, 2015	$ 11,763	$ 9,894	$ (136)	$ 1,366	$ 639