Merger-related Divestitures, Discontinued Operations and Net Assets Held for Sale - Narrative (Details) - Discontinued Operations, Disposed of by Sale $ in Billions	Mar. 01, 2019 USD ($)
Messer Group and CVC Capital Partners Fund VII Sale and Purchase Agreement
Schedule of Equity Method Investments [Line Items]
Consideration paid	$ 2.9
Americas Industrial Gases Business, Plant Sales
Schedule of Equity Method Investments [Line Items]
Proceeds for incremental plant sales	$ 0.5

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration