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LEASES - Narrative (Details)	12 Months Ended
	Dec. 31, 2020
Minimum
Lessee, Lease, Description [Line Items]
Lease, remaining lease term	1 year
Lessee, lease, renewal term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease, remaining lease term	10 years
Lessee, lease, renewal term	3 years

X

- 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

Name:	us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lease, Remaining Lease Term

+ References

No definition available.

+ Details

Name:	xray_LeaseRemainingLeaseTerm
Namespace Prefix:	xray_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee, Lease, Renewal Term

+ References

No definition available.

+ Details

Name:	xray_LesseeLeaseRenewalTerm
Namespace Prefix:	xray_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: