Redeemable Noncontrolling Interests (Narrative) (Details) - Atlas Tower South Africa [Member] - USD ($) $ in Millions	Mar. 25, 2021	Jun. 30, 2021
Noncontrolling Interest [Line Items]
Noncontrolling interest ownership percentage		6.00%
Acquired additional interest value	$ 13.7

The cash outflow associated with the purchase of noncontrolling interest during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration