Common Stock (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Nov. 30, 2019
Equity, Class of Treasury Stock [Line Items]
Stock-based compensation, shares issued during period	2,300,000	3,200,000
Common Stock
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)	0	0
Share repurchases program, authorized amount (up to)			$ 2,500,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 2,400,000,000