Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Schedule of changes in accounting principles

In the following table, revenue is summarized by type and by the applicable accounting standard.

	Three Months Ended June 30,
			2021						2020
	Topic 842		Topic 606		Total		Topic 842		Topic 606		Total
Revenues:
Owned equipment rentals	$	1,635	$	—	$	1,635	$	1,404	$	—	$	1,404
Re-rent revenue	42		—		42		29		—		29
Ancillary and other rental revenues:
Delivery and pick-up	—		148		148		—		113		113
Other	100		26		126		78		18		96
Total ancillary and other rental revenues	100		174		274		78		131		209
Total equipment rentals	1,777		174		1,951		1,511		131		1,642
Sales of rental equipment	—		194		194		—		176		176
Sales of new equipment	—		57		57		—		53		53
Contractor supplies sales	—		27		27		—		23		23
Service and other revenues	—		58		58		—		45		45
Total revenues	$	1,777	$	510	$	2,287	$	1,511	$	428	$	1,939

	Six Months Ended June 30,
			2021						2020
	Topic 842		Topic 606		Total		Topic 842		Topic 606		Total
Revenues:
Owned equipment rentals	$	3,040	$	—	$	3,040	$	2,926	$	—	$	2,926
Re-rent revenue	74		—		74		63		—		63
Ancillary and other rental revenues:
Delivery and pick-up	—		264		264		—		232		232
Other	181		59		240		159		45		204
Total ancillary and other rental revenues	181		323		504		159		277		436
Total equipment rentals	3,295		323		3,618		3,148		277		3,425
Sales of rental equipment	—		461		461		—		384		384
Sales of new equipment	—		106		106		—		115		115
Contractor supplies sales	—		51		51		—		48		48
Service and other revenues	—		108		108		—		92		92
Total revenues	$	3,295	$	1,049	$	4,344	$	3,148	$	916	$	4,064

SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure

The rollforward of our allowance for doubtful accounts (in total, and associated with revenues arising from both Topic 606 and Topic 842) is shown below.

	Three Months Ended June 30, 2021		Three Months Ended June 30, 2020		Six Months Ended June 30, 2021		Six Months Ended June 30, 2020
Beginning balance	$	104	$	107	$	108	$	103
Acquired	8		—		8		—
Charged to costs and expenses (1)	2		2		2		6
Charged to revenue (2)	5		2		9		10
Deductions (3)	(7)		(3)		(15)		(11)
Ending balance	$	112	$	108	$	112	$	108

_________________

(1)    Reflects bad debt expenses recognized within selling, general and administrative expenses (associated with Topic 606 revenues).

(2)    Primarily reflects doubtful accounts associated with lease revenues that were recognized as a reduction to equipment rentals revenue (primarily associated with Topic 842 revenues).

(3)    Represents write-offs of accounts, net of immaterial recoveries.