XML 67 R56.htm IDEA: XBRL DOCUMENT v3.10.0.1
STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Thousands
3 Months Ended 6 Months Ended
Mar. 26, 2018
Dec. 22, 2017
Mar. 26, 2018
Jun. 30, 2018
Jun. 30, 2017
Aug. 01, 2018
Dec. 31, 2017
Dec. 21, 2017
Dec. 14, 2017
Equity, Class of Treasury Stock [Line Items]                  
Stock repurchase program, authorized amount                 $ 3,000,000,000
Shares       80 0        
Value of shares repurchased       $ 24,000,000 $ 0        
Common shares acquired in connection with employee stock plans (in shares)       250 370        
Common shares acquired in connection with employee stock plans, amount       $ 69,000,000 $ 78,000,000        
Treasury stock reissued (in shares)       850          
Treasury stock reissued       $ 89,000,000          
Accumulated other comprehensive gain (loss)       (176,000,000)     $ 19,000,000    
Net unrealized (losses) gains on investment securities                  
Equity, Class of Treasury Stock [Line Items]                  
Accumulated other comprehensive gain (loss)       $ (176,000,000)     125,000,000    
Additional liability that would exist on closed block of long-term care policies assuming unrealized gains on investments backing such products were realized and reinvested at current yields                  
Equity, Class of Treasury Stock [Line Items]                  
Accumulated other comprehensive gain (loss)             $ 106,000,000    
Subsequent Event                  
Equity, Class of Treasury Stock [Line Items]                  
Remaining authorized amount           $ 2,000,000,000      
December 2017 ASR                  
Equity, Class of Treasury Stock [Line Items]                  
Stock repurchase program, authorized amount               $ 1,000,000,000.0  
Share repurchase payment   $ 1,000,000,000              
Shares 460 3,280 3,740            
Value of shares repurchased $ 200,000,000 $ 800,000,000              
Decrease in capital in excess of par value   $ 200,000,000              
Average cost per share (in dollars per share)     $ 267.55