Accounts Receivable, Allowance For Credit Loss, Additions

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Period Type:	instant

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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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.

+ Details

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Contract with customer, liability	$ 54		$ 56
Accounts receivable, allowance for credit loss, additions	15	$ 6
Contract with customer, asset	0
Revenue recognized	$ 0	0
Accounts Receivable \| Customer concentration risk
Property, Plant and Equipment [Line Items]
Percentage of equipment rental revenue	1.00%		1.00%
Concentration risk	1.00%		1.00%
Revenues \| Product concentration risk
Property, Plant and Equipment [Line Items]
Percentage of equipment rental revenue	85.00%
Concentration risk	85.00%
Revenues \| Largest customer \| Customer concentration risk
Property, Plant and Equipment [Line Items]
Percentage of equipment rental revenue	1.00%		1.00%	1.00%	1.00%
Concentration risk	1.00%		1.00%	1.00%	1.00%
Owned equipment rentals \| Revenues \| Product concentration risk
Property, Plant and Equipment [Line Items]
Percentage of equipment rental revenue	72.00%
Concentration risk	72.00%
US \| Revenues \| Geographic Concentration Risk
Property, Plant and Equipment [Line Items]
Percentage of equipment rental revenue	91.00%
Concentration risk	91.00%
Topic 842 \| Revenues \| Product concentration risk
Property, Plant and Equipment [Line Items]
Percentage of equipment rental revenue	78.00%
Concentration risk	78.00%
General rentals \| Revenues \| Product concentration risk
Property, Plant and Equipment [Line Items]
Percentage of equipment rental revenue	81.00%
Concentration risk	81.00%
Calculated under Revenue Guidance in Effect before Topic 606
Property, Plant and Equipment [Line Items]
Revenue from contract with customer	$ 0	$ 0