Other Non-Current Assets (Schedule of Other Non-Current Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Deferred taxes	$ 272		$ 399
Pension assets	360		313
Debt issuance costs	15		13
Investments	19		9
Fair value of derivatives	20		4
Other	117		94
Other non-current assets	$ 803	$ 833	$ 832

Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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