Borrowings and Other Obligations (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Other Short-term Financing Arrangements	$ 10	$ 13
Short-term Borrowings	10	13
Long-term Debt and Lease Obligation	2,605	2,601
Senior Notes
Short-term Debt [Line Items]
Long-term Debt	2,098	2,098
Other short-term bank loans
Short-term Debt [Line Items]
Finance Lease, Liability, Noncurrent	47	48
Secured Debt
Short-term Debt [Line Items]
Long-term Debt	460	455
Other short-term bank loans
Short-term Debt [Line Items]
Finance Lease Current Portion	10	9
Other Short-term Financing Arrangements	$ 0	$ 4

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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