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Fair Value of Financial Assets and Liabilities-Transfers between levels (Details) - Instruments issued by the Chilean Government and Central Bank - CLP ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Financial assets held-for-trading
Transfers between levels
Transfers from level 1 to level 2	$ 4,688
Transfers from level 2 to level 1	3,498
Financial assets available-for-sale
Transfers between levels
Transfers from level 2 to level 1	$ 4,373	$ 15,217

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The amount of transfers out of Level 1 and into Level 2 of the fair value hierarchy of assets held at the end of the reporting period. [Refer: Level 1 of fair value hierarchy [member]; Level 2 of fair value hierarchy [member]]

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The amount of transfers out of Level 2 and into Level 1 of the fair value hierarchy of assets held at the end of the reporting period. [Refer: Level 1 of fair value hierarchy [member]; Level 2 of fair value hierarchy [member]]

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