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Consolidating Condensed Financial Information - Consolidating Condensed Balance Sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Condensed Balance Sheet    
Current assets $ 5,964 $ 6,063
Total assets 38,031 36,385
Current liabilities 5,297 2,513
Long-term debt, less current portion 13,722 14,073
Deferred income taxes 1,111 1,166
Total liabilities 33,490 31,351
Total stockholders’ equity 4,480 5,016
Total liabilities and stockholders’ equity 38,031 36,385
Parent Company    
Condensed Balance Sheet    
Current assets 221 3,038
Investment in and advances to unconsolidated affiliates 60 128
Investment in subsidiaries 10,311 6,798
Property and equipment, net 8 18
Other assets, net 333 513
Total assets 10,933 10,495
Current liabilities 228 231
Long-term debt, less current portion 6,190 5,084
Deferred income taxes 0 4
Other long-term liabilities 35 160
Total liabilities 6,453 5,479
Total stockholders’ equity 4,480 5,016
Total liabilities and stockholders’ equity $ 10,933 $ 10,495