Taxes - Undistributed Foreign Earnings (Details) $ in Millions	Dec. 31, 2018 USD ($)
Taxes
Deferred tax liability for undistributed foreign earnings not indefinitely reinvested	$ 981
Undistributed earnings of foreign subsidiaries indefinitely reinvested in foreign operations	$ 300

Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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