XML 82 R67.htm IDEA: XBRL DOCUMENT v3.21.2
CAPITAL MANAGEMENT Changes in Invested Capital (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Changes in Invested capital [Roll Forward]        
Opening balance $ 9,410 $ 9,011 $ 9,213 $ 9,009
Issuance of preferred units 0 0 194 0
Issuance of limited partnership units and redeemable partnership units 3 3 6 5
Ending balance 9,413 9,014 9,413 9,014
Weighted Average Invested Capital $ 9,410 $ 9,011 $ 9,386 $ 9,010