Consolidated Condensed Statements of Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividend declared per share (in usd per share)	$ 0.74	$ 1.29	$ 0.74	$ 1.29
Remaining authorized repurchase amount	$ 1,000		$ 1,000
Stock repurchase program, authorized amount					$ 8,000