Merger of Praxair, Inc. and Linde AG - Schedule of Purchase Price (Details) $ / shares in Units, $ in Millions	Oct. 31, 2018 USD ($) $ / shares shares
Linde AG
Business Acquisition [Line Items]
Business combination agreement exchange ratio	1.54
Linde plc ordinary shares issued in exchange for Linde AG (in shares)	263,148,000
Purchase price | $	$ 43,288
Linde AG
Business Acquisition [Line Items]
Linde AG common stock tendered (in shares)	170,875,000
Praxair
Business Acquisition [Line Items]
Per share price of Praxair, Inc. common stock (in dollars per share) | $ / shares	$ 164.50