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Summary of significant accounting policies and supplemental information - Assets, Liabilities and Net Assets of Company's Argentinean Subsidiaries (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Subsidiary or Equity Method Investee [Line Items]
Assets	$ 14,201	$ 13,736
Liabilities	12,161	11,909
Argentinean Subsidiaries
Subsidiary or Equity Method Investee [Line Items]
Assets	3,295	3,238
Liabilities	2,259	2,419
Net Assets	$ 1,036	$ 819

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