Approximate percentage of sales price for certain products expected to be recognized upfront as revenues due to new accounting pronouncement.

No definition available.

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

+ References

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- Definition

The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Movement in restricted cash related to acquisition		$ 0	$ 3,561	$ (3,561)
Adjustments For ASU 2014-09 \| Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sale price recognized as revenue upon delivery (percent)	20.00%
Adjustments For ASU 2016-15 \| New Accounting Pronouncement, Early Adoption, Effect \| Pro Forma
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Movement in restricted cash related to acquisition				$ 3,600
Minimum \| Retained Earnings \| Adjustments For ASU 2014-09 \| Subsequent Events \| Pro Forma
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment to retained earnings at date of adoption					$ 60
Maximum \| Retained Earnings \| Adjustments For ASU 2014-09 \| Subsequent Events \| Pro Forma
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment to retained earnings at date of adoption					$ 100