XML 141 R64.htm IDEA: XBRL DOCUMENT v3.20.1
RETIREMENT BENEFITS - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Change in accumulated other comprehensive income (loss)      
Balance, beginning of period $ 193,946    
Actuarial assumptions changes and plan experience 430   $ (2,300)
Net asset gain (loss) due to difference between actual and expected returns (1,128)   1,427
Net amortization 76   274
Prior service cost 0   (7)
Curtailment/settlement gain 0   1
Foreign exchange impact and other 204   (66)
Change in deferred taxes, net 132   119
Change, net of tax (286) $ (64) (552)
Balance, end of period 192,982 197,015 193,946
Benefit plans      
Change in accumulated other comprehensive income (loss)      
Balance, beginning of period (6,809) (6,257) (6,257)
Balance, end of period $ (7,095) $ (6,321) $ (6,809)