Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Carrying Value
Financial Instruments
Long-term debt, excluding current portion	$ 12,876	$ 14,001
Fair Value
Financial Instruments
Long-term debt, excluding current portion	$ 10,970	$ 12,484

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Balance Type:	credit
Period Type:	instant