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Reportable Segments (Notes)
 9 Months Ended
Sep. 30, 2021
Segment Reporting [Abstract]  
Reportable Segments
8.  Reportable Segments

Financial information by segment follows:
Three Months Ended
September 30,		Nine Months Ended
September 30,
2021202020212020
(In millions)
Revenues
Natural Gas Pipelines
Revenues from external customers$2,541 $1,803 $8,611 $5,229 
Intersegment revenues14 6 45 26 
Products Pipelines605 442 1,572 1,282 
Terminals
Revenues from external customers421 423 1,273 1,282 
Intersegment revenues1 1 2 3 
CO2
257 251 729 792 
Corporate and intersegment eliminations(15)(7)(47)(29)
Total consolidated revenues$3,824 $2,919 $12,185 $8,585 
Three Months Ended
September 30,		Nine Months Ended
September 30,
2021202020212020
(In millions)
Segment EBDA(a)
Natural Gas Pipelines$1,069 $1,091 $2,602 $2,284 
Products Pipelines279 223 792 719 
Terminals216 246 689 732 
CO2
163 156 599 (453)
Total Segment EBDA1,727 1,716 4,682 3,282 
DD&A(526)(539)(1,595)(1,636)
Amortization of excess cost of equity investments(21)(32)(56)(99)
General and administrative and corporate charges(167)(150)(465)(472)
Interest, net (368)(383)(1,122)(1,214)
Income tax expense(134)(140)(248)(304)
Total consolidated net income (loss)$511 $472 $1,196 $(443)
September 30, 2021December 31, 2020
(In millions)
Assets
Natural Gas Pipelines$47,576 $48,597 
Products Pipelines9,118 9,182 
Terminals8,507 8,639 
CO2
2,808 2,478 
Corporate assets(b)1,631 3,077 
Total consolidated assets$69,640 $71,973 
(a)Includes revenues, earnings from equity investments, other, net, less operating expenses, loss on impairments and divestitures, net, and other income, net. Operating expenses include costs of sales, operations and maintenance expenses, and taxes, other than income taxes.
(b)Includes cash and cash equivalents, restricted deposits, certain prepaid assets and deferred charges, including income tax related assets, risk management assets related to derivative contracts, corporate headquarters in Houston, Texas and miscellaneous corporate assets (such as information technology, telecommunications equipment and legacy activity) not allocated to our reportable segments.