Acquisitions (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 1,953
Cash Acquired from Acquisition	91
Business Acquisition, Purchase Price Allocation, Working Capital	136
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment	439
Goodwill	884
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	606
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	87
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	(276)
Payments to Acquire Businesses, Net of Cash Acquired	1,876	$ 0
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 90
Gleadell [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	50.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value	$ 14
Business Acquisition, Purchase Price Allocation, Working Capital	(6)
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment	13
Goodwill	10
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	(2)
Payments to Acquire Businesses, Net of Cash Acquired	15
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	3
Neovia [Member]
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Working Capital	102
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment	409
Goodwill	784
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	583
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	87
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	(274)
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination	1,691
FCC [Member]
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Working Capital	40
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment	17
Goodwill	90
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	23
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	0
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination	$ 170

The amount of acquisition cost of a business combination allocated to working capital of the ongoing operation.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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