XML 79 R60.htm IDEA: XBRL DOCUMENT v3.21.2
Stockholders' Equity - Share Repurchase Program (Details) - USD ($)
shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Mar. 31, 2021
Mar. 31, 2020
Sep. 30, 2021
Apr. 19, 2021
Jul. 25, 2017
Equity, Class of Treasury Stock [Line Items]            
Stock repurchased during period, value $ 419,000,000 $ 141,000,000 $ 115,000,000      
Common Stock | Share Repurchase Program 2017            
Equity, Class of Treasury Stock [Line Items]            
Stock repurchase program, authorized amount           $ 2,000,000,000
Stock repurchase program, remaining authorized amount 0     $ 0    
Common Stock | Share Repurchase Program 2021            
Equity, Class of Treasury Stock [Line Items]            
Stock repurchase program, authorized amount         $ 2,000,000,000  
Stock repurchase program, remaining authorized amount $ 1,900,000,000     $ 1,900,000,000    
Common Stock | Share Repurchase Program 2017 and 2021            
Equity, Class of Treasury Stock [Line Items]            
Stock repurchased during period (in shares)       3.0    
Stock repurchased during period, value       $ 641,000,000