Short-Term Borrowings, Long-Term Debt and Available Credit Facilities Short-Term Borrowings and Capital Lease Obligations (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Long-term debt payable within one year	[1]	$ 1	$ 263
Finance Lease, Liability, Current		4	25
Total short-term borrowings and finance lease obligations		$ 7	$ 2,154	[2]
Short-term Debt, Weighted Average Interest Rate, at Point in Time		6.70%	3.00%
Commercial Paper [Member]
Short-term Debt [Line Items]
Short-term borrowings and finance lease obligations		$ 0	$ 1,847
Other loans - various currencies [Member]
Short-term Debt [Line Items]
Short-term borrowings and finance lease obligations		$ 2	$ 19

[1] See discussion of debt extinguishment that follows.

[2] Includes adjustments for discontinued operations and common control business combination.