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Leases - Operating Lease Amounts Included on Consolidated Balance Sheets (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Assets    
ROU assets $ 411 $ 433
Liabilities    
Current lease liabilities 82 89
Non-current lease liabilities 331 344
Total lease liabilities $ 413 $ 433
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Other current assets Other current assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Other current liabilities Other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Other liabilities Other liabilities