Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Other Balance Sheet Information

The following table presents the accumulated depreciation included in property, plant and equipment, net and accumulated amortization included in intangible assets, net:

(In millions)	March 31, 2021		December 31, 2020
Property, plant and equipment accumulated depreciation	$	1,566	$	1,936
Intangible assets accumulated amortization	1,424		1,357

Activity in Allowance for Credit Losses

The following table represents the activity in the allowance for credit losses for the three months ended March 31, 2021:

(In millions)	Three months ended March 31, 2021		Three months ended March 31, 2020
Beginning balance	$	67	$	43
Acquired balance from Direct Energy	112		—
Provision for credit losses	611		24
Write-offs	(48)		(32)
Recoveries collected	7		4
Ending balance	$	749	$	39

Reconciliation of Cash and Cash Equivalents, Restricted Cash and Funds Deposited by Counterparties

The following table provides a reconciliation of cash and cash equivalents, restricted cash and funds deposited by counterparties reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the statements of cash flows:

(In millions)	March 31, 2021		December 31, 2020
Cash and cash equivalents	$	501	$	3,905
Funds deposited by counterparties	55		19
Restricted cash	18		6
Cash and cash equivalents, funds deposited by counterparties and restricted cash shown in the statement of cash flows	$	574	$	3,930