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General (Tables)
3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]  
Schedule of Restrictions on Cash and Cash Equivalents There was no restricted cash or restricted cash equivalents at March 31, 2019.
millions
Cash and cash equivalents$2,021  
Restricted cash and restricted cash equivalents242  
Cash and restricted cash included in assets held for sale27  
Restricted cash and restricted cash equivalents included in long-term receivables and other assets, net74  
Cash, cash equivalents, restricted cash, and restricted cash equivalents$2,364  
Schedule of Cash and Cash Equivalents There was no restricted cash or restricted cash equivalents at March 31, 2019.
millions
Cash and cash equivalents$2,021  
Restricted cash and restricted cash equivalents242  
Cash and restricted cash included in assets held for sale27  
Restricted cash and restricted cash equivalents included in long-term receivables and other assets, net74  
Cash, cash equivalents, restricted cash, and restricted cash equivalents$2,364