Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Summary of Significant Accounting Policies [Abstract]

Allowance for Credit Losses

The following table presents our allowance for credit losses activity for the years indicated:

	For the Year Ended December 31,
	2023			2022			2021
Balance at beginning of period	$	54		$	53		$	47
Charged to costs and expenses		1			6			7
Charged to other accounts		–			1			4
Deductions		(20	)		(6	)		(5	)
Balance at end of period	$	35		$	54		$	53

Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash and cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sum to the total of the amounts shown in the Statements of Consolidated Cash Flows.

	December 31,
	2023		2022
Cash and cash equivalents	$	180	$	76
Restricted cash		140		130
Total cash, cash equivalents and restricted cash shown in the    Statements of Consolidated Cash Flows	$	320	$	206

Asset Impairment Charges

The following table summarizes our asset impairment charges by type as presented on our Statements of Consolidated Cash Flows for the years indicated:

	For the Year Ended December 31,
	2023		2022		2021
Impairment charges reflected in operating costs and expenses:
Property, plant and equipment	$	18	$	41	$	218
Other (1)		12		12		15
Total asset impairment charges in operating costs and expenses (2)		30		53		233
Other property, plant and equipment impairment charges (3)		2		–		–
Total asset impairment charges	$	32	$	53	$	233

(1)	Primarily represents the write-down of surplus materials classified as current assets and intangible assets other than goodwill.
(2)	Amounts presented are a component of “Third party and other costs” within the “Operating costs and expenses” section of our Statements of Consolidated Operations.
(3)	Amounts presented are a component of “Third party and other costs” within the “General and administrative costs” section of our Statements of Consolidated Operations.