Merger-related Divestitures, Discontinued Operations and Net Assets Held for Sale - Net Carrying Value of Business Assets and Liabilities Divested (Details) - Praxair - Americas Industrial Gases Business - Disposal Group, Disposed of by Sale, Not Discontinued Operations $ in Millions	Mar. 31, 2019 USD ($)
Assets
Cash and cash equivalents	$ 200
Accounts receivable – net	479
Inventories	181
Prepaid and other current assets	409
Property, plant and equipment – net	1,590
Equity investments	37
Goodwill	3
Other intangible assets – net	10
Other long-term assets	76
Asset adjustments for estimated fair value	1,650
Total Assets	4,635
Liabilities
Accounts payable	94
Accrued taxes	60
Other current liabilities	767
Long-term debt	2
Other long-term liabilities	98
Deferred credits	177
Total Liabilities Divested	1,198
Cumulative translation adjustment, net of taxes	12
Net Assets	$ 3,449