Fair Value Disclosures (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Estimated Fair Values and Carrying Amounts of Assets and Liabilities

	Level in Fair Value Hierarchy	September 30, 2020				December 31, 2019
		Carrying  Amount		Fair Value		Carrying  Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	242	$	242	$	196	$	196
Restricted cash, current and non-current	1	179		179		142		142
Liabilities:
Total debt and other obligations	2	19,304		21,082		18,121		19,170