Crown Castle (CCI) 10-Q 31 Jul 20 2020 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Jun. 30, 2020	Jul. 29, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-16441
Entity Registrant Name	CROWN CASTLE INTERNATIONAL CORP.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	76-0470458
Entity Address, Address Line One	1220 Augusta Drive
Entity Address, Address Line Two	Suite 600
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77057-2261
City Area Code	713
Local Phone Number	570-3000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		419,668,287
Entity Central Index Key	0001051470
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	CCI
Security Exchange Name	NYSE
6.875% Mandatory Convertible Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value
Trading Symbol	CCI.PRA
Security Exchange Name	NYSE

Condensed Consolidated Balance

Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 2,514	$ 196
Restricted cash	154	137
Receivables, net	439	596
Prepaid expenses	137	107
Other current assets	192	168
Total current assets	3,436	1,204
Deferred site rental receivables	1,428	1,424
Property and equipment, net of accumulated depreciation of $10,236 and $9,668, respectively	14,963	14,666
Operating lease right-of-use assets	6,251	6,133
Goodwill	10,078	10,078
Other intangible assets, net	4,626	4,836
Other assets, net	119	116
Total assets	40,901	38,457
Current liabilities:
Accounts payable	280	334
Accrued interest	182	169
Deferred revenues	763	657
Other accrued liabilities	333	361
Current maturities of debt and other obligations	99	100
Current portion of operating lease liabilities	307	299
Total current liabilities	1,964	1,920
Debt and other long-term obligations	21,014	18,021
Operating lease liabilities	5,615	5,511
Other long-term liabilities	2,482	2,516
Total liabilities	31,075	27,968
CCIC stockholders' equity:
Common stock, $0.01 par value; 600 shares authorized; shares issued and outstanding: June 30, 2020—417 and December 31, 2019—416	4	4
6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value; 20 shares authorized; shares issued and outstanding: June 30, 2020—2 and December 31, 2019—2; aggregate liquidation value: June 30, 2020—$1,650 and December 31, 2019—$1,650	0	0
Additional paid-in capital	17,872	17,855
Accumulated other comprehensive income (loss)	(6)	(5)
Dividends/distributions in excess of earnings	(8,044)	(7,365)
Total equity	9,826	10,489
Total liabilities and equity	$ 40,901	$ 38,457

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheet (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Condensed Consolidated Balance Sheet (Parenthetical) [Abstract]
Accumulated depreciation, property and equipment	$ 10,236	$ 9,668
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	20	20
Preferred Stock, Shares Issued	2	2
Preferred Stock, Shares Outstanding	2	2
Preferred Stock, Liquidation Preference, Value	$ 1,650	$ 1,650
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	600	600
Common stock, shares outstanding	417	416

Condensed Consolidated Statemen

Condensed Consolidated Statement of Operations and Comprehensive Income (Loss) - USD ($) shares in Millions, $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2020		Jun. 30, 2019
Net revenues:
Site Rental		$ 1,319	$ 1,263		$ 2,629		$ 2,505
Services and other		121	184		232		350
Net Revenues		1,440	1,447		2,861		2,855
Operating expenses:
Site rental	[1]	378	365		752		726
Services and other	[1]	108	137	[2]	207		261	[2]
Selling, general and administrative		164	155		339		307
Asset write-down charges		3	6		7		12
Acquisition and integration costs		2	2		7		6
Depreciation, amortization and accretion		402	393		801		787
Total operating expenses		1,057	1,058		2,113		2,099
Operating income (loss)		383	389		748		756
Nonoperating Income (Expense) [Abstract]
Interest expense and amortization of deferred financing costs		(178)	(169)		(353)		(337)
Gains (losses) on retirement of long-term obligations		0	(1)		0		(2)
Interest income		1	1		2		3
Other income (expense)		0	0		0		(1)
Income (loss) before income taxes		206	220		397		419
Benefit (provision) for income taxes		(6)	(4)		(11)		(10)
Net income (loss) attributable to CCIC stockholders		200	216		386		409
Dividends/distributions on preferred stock	[3]	(28)	(28)		(57)		(57)
Net income (loss) attributable to CCIC common stockholders		172	188		329		352
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments		0	0		(1)		0
Total other comprehensive income (loss)		0			(1)	[4]	0
Comprehensive income (loss) attributable to CCIC stockholders		$ 200	$ 216		$ 385		$ 409
Net income (loss) attributable to CCIC common stockholders, per common share:
Basic		$ 0.41	$ 0.45		$ 0.79		$ 0.85
Diluted		$ 0.41	$ 0.45		$ 0.79		$ 0.84
Weighted-average common shares outstanding (in millions):
Basic		417	416		416		415
Diluted		419	418		418		417
[1]	Exclusive of depreciation, amortization and accretion shown separately.
[2]	Exclusive of depreciation, amortization and accretion shown separately.
[3]	See note 8 for information regarding common and preferred stock dividends declared per share.
[4]	See the condensed consolidated statement of operations and other comprehensive income (loss) for the components of other comprehensive income (loss).

Condensed Consolidated Statem_2

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ 386	$ 409
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	801	787
(Gains) losses on retirement of long-term obligations	0	2
Amortization of deferred financing costs and other non-cash interest	3	1
Stock-based compensation expense	75	62
Asset write-down charges	7	12
Deferred income tax (benefit) provision	2	1
Other non-cash adjustments	2	3
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	13	18
Increase (decrease) in accounts payable	(41)	6
Increase (decrease) in other liabilities	55	77
Decrease (increase) in receivables	157	(89)
Decrease (increase) in other assets	(51)	(62)
Net cash provided by (used for) operating activities	1,409	1,227
Cash flows from investing activities:
Capital expenditures	(861)	(998)
Payments for acquisitions, net of cash acquired	(16)	(13)
Other investing activities, net	(13)	1
Net cash provided by (used for) investing activities	(890)	(1,010)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	3,733	995
Principal payments on debt and other long-term obligations	(53)	(36)
Purchases and redemptions of long-term debt	0	(12)
Borrowings under revolving credit facility	1,340	1,195
Payments under revolving credit facility	(1,865)	(1,785)
Net issuances (repayments) under commercial paper program	(155)	500
Payments for financing costs	(38)	(14)
Purchases of Common Stock	(74)	(43)
Dividends/distributions paid on common stock	(1,014)	(944)
Dividends/distributions paid on preferred stock	(57)	(57)
Net cash provided by (used for) financing activities	1,817	(201)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	2,336
Net increase (decrease) in cash, cash equivalents, and restricted cash		16
Cash, cash equivalents and restricted cash at beginning of period	338	413
Cash, cash equivalents and restricted cash at end of period	2,673	429
Effect of Exchange Rate on Cash and Cash Equivalents [Abstract]
Effect of exchange rate changes	$ (1)	$ 0

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Equity - USD ($) shares in Millions, $ in Millions		Total	Common Stock [Member]	6.875% Mandatory Convertible Preferred Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Foreign Currency Adjustment Attributable to Parent [Member]	Dividends/Distributions in Excess of Earnings [Member]
Balance, shares Period Start at Dec. 31, 2018			415
Balance, value Period Start at Dec. 31, 2018		$ 11,571	$ 4	$ 0	$ 17,767	$ (5)	$ (6,195)
Preferred Stock, Shares Outstanding Period Start at Dec. 31, 2018				2
Stock-based compensation related activity, net of forfeitures, value		77			77
Stock-based compensation related activity, net of forfeitures, shares			1
Purchases and retirement of common stock, value		(43)			(43)
Other Comprehensive Income (Loss), Net of Tax		0
Common stock dividends/distributions	[1]	(944)					(944)
Dividends/distributions on preferred stock	[1]	(57)					(57)
Foreign currency translation adjustments		0
Net income (loss)		409					409
Balance, shares Period End at Jun. 30, 2019			416
Balance, value Period End at Jun. 30, 2019		11,013	$ 4	$ 0	17,801	(5)	(6,787)
Preferred Stock, Shares Outstanding Period End at Jun. 30, 2019				2
Balance, shares Period Start at Mar. 31, 2019			416
Balance, value Period Start at Mar. 31, 2019		11,267	$ 4	$ 0	17,770	(5)	(6,502)
Preferred Stock, Shares Outstanding Period Start at Mar. 31, 2019				2
Stock-based compensation related activity, net of forfeitures, value		32			32
Purchases and retirement of common stock, value		(1)			(1)
Common stock dividends/distributions	[1]	(473)					(473)
Dividends/distributions on preferred stock	[1]	(28)					(28)
Foreign currency translation adjustments		0				0
Net income (loss)		216					216
Balance, shares Period End at Jun. 30, 2019			416
Balance, value Period End at Jun. 30, 2019		$ 11,013	$ 4	$ 0	17,801	(5)	(6,787)
Preferred Stock, Shares Outstanding Period End at Jun. 30, 2019				2
Balance, shares Period Start at Dec. 31, 2019		416	416
Balance, value Period Start at Dec. 31, 2019		$ 10,489	$ 4	$ 0	17,855	(5)	(7,365)
Preferred Stock, Shares Outstanding Period Start at Dec. 31, 2019		2		2
Stock-based compensation related activity, net of forfeitures, value		$ 91			91
Stock-based compensation related activity, net of forfeitures, shares			1
Purchases and retirement of common stock, value		(74)			(74)
Other Comprehensive Income (Loss), Net of Tax	[2]	(1)				(1)
Common stock dividends/distributions	[1]	(1,008)					(1,008)
Dividends/distributions on preferred stock	[1]	(57)					(57)
Foreign currency translation adjustments		(1)
Net income (loss)		$ 386					386
Balance, shares Period End at Jun. 30, 2020		417	417
Balance, value Period End at Jun. 30, 2020		$ 9,826	$ 4	$ 0	17,872	(6)	(8,044)
Preferred Stock, Shares Outstanding Period End at Jun. 30, 2020		2		2
Balance, shares Period Start at Mar. 31, 2020			417
Balance, value Period Start at Mar. 31, 2020		$ 10,121	$ 4	$ 0	17,835	(6)	(7,712)
Preferred Stock, Shares Outstanding Period Start at Mar. 31, 2020				2
Stock-based compensation related activity, net of forfeitures, value		38			38
Purchases and retirement of common stock, value		(1)			(1)
Other Comprehensive Income (Loss), Net of Tax		0
Common stock dividends/distributions	[1]	(504)					(504)
Dividends/distributions on preferred stock	[1]	(28)					(28)
Foreign currency translation adjustments		0
Net income (loss)		$ 200					200
Balance, shares Period End at Jun. 30, 2020		417	417
Balance, value Period End at Jun. 30, 2020		$ 9,826	$ 4	$ 0	$ 17,872	$ (6)	$ (8,044)
Preferred Stock, Shares Outstanding Period End at Jun. 30, 2020		2		2
[1]	See note 8 for information regarding common and preferred stock dividends declared per share.
[2]	See the condensed consolidated statement of operations and other comprehensive income (loss) for the components of other comprehensive income (loss).

General

General	3 Months Ended
	Jun. 30, 2020
General
General	General The information contained in the following notes to the condensed consolidated financial statements is condensed from that which would appear in the annual consolidated financial statements; accordingly, the condensed consolidated financial statements included herein should be reviewed in conjunction with the consolidated financial statements for the fiscal year ended December 31, 2019 , and related notes thereto, included in the 2019 Form 10-K filed by Crown Castle International Corp. ("CCIC") with the SEC. Capitalized terms used but not defined in these notes to the condensed consolidated financial statements have the same meaning given to them in the 2019 Form 10-K. References to the "Company" refer to CCIC and its predecessor, as applicable, and their subsidiaries, unless otherwise indicated or the context indicates otherwise. As used herein, the term "including," and any variation thereof means "including without limitation." The use of the word "or" herein is not exclusive. Unless the context suggests otherwise, references to "U.S." are to the United States of America and Puerto Rico, collectively. The Company owns, operates and leases shared communications infrastructure that is geographically dispersed throughout the U.S., including (1) towers and other structures, such as rooftops (collectively, "towers"), and (2) fiber primarily supporting small cell networks ("small cells") and fiber solutions. The Company's towers, fiber and small cells assets are collectively referred to herein as "communications infrastructure," and the Company's customers on its communications infrastructure are referred to herein as "tenants." The Company's core business is providing access, including space or capacity, to its shared communications infrastructure via long-term contracts in various forms, including lease, license, sublease and service agreements (collectively, " tenant contracts"). The Company's operating segments consist of (1) Towers and (2) Fiber. See note 11 . As part of the Company's effort to provide comprehensive communications infrastructure solutions, as an ancillary business, the Company also offers certain services primarily relating to its Towers segment, predominately consisting of (1) site development services primarily relating to existing or new tenant equipment installations, including: site acquisition, architectural and engineering, or zoning and permitting (collectively, "site development services") and (2) tenant equipment installation or subsequent augmentations (collectively, "installation services"). The Company operates as a REIT for U.S. federal income tax purposes. In addition, the Company has certain taxable REIT subsidiaries ("TRSs"). See note 7 . Approximately 53% of the Company's towers are leased or subleased or operated and managed under master leases, subleases, and other agreements with AT&T and T-Mobile, including agreements assumed by T-Mobile following its merger with Sprint completed on April 1, 2020. The Company has the option to purchase these towers at the end of their respective lease terms. The Company has no obligation to exercise such purchase options. Basis of Presentation The condensed consolidated financial statements included herein are unaudited; however, they include all adjustments (consisting only of normal recurring adjustments) which, in the opinion of management, are necessary to state fairly the consolidated financial position of the Company at June 30, 2020 , the condensed consolidated results of operations for the three and six months ended June 30, 2020 and 2019 , and the condensed consolidated cash flows for the six months ended June 30, 2020 and 2019 . The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The results of operations for the interim periods presented are not necessarily indicative of the results to be expected for the full year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Restatement of Previously Issue

Restatement of Previously Issued Condensed Consolidated Financial Statements (Notes)	6 Months Ended
	Jun. 30, 2020
Accounting Changes and Error Corrections [Abstract]
Restatement of Financials [Text Block]	Restatement of Previously Issued Condensed Consolidated Financial Statements The following tables summarize the impact of the restatement adjustments that were related to the timing of revenue recognition on its tower installation services. Specifically, the Company determined that its historical practice of recognizing the full transaction price as service revenues upon completion of an installation was not acceptable under GAAP. Instead, a portion of the transaction price for the Company's tower installation services, specifically the amounts associated with permanent improvements recorded as fixed assets, represent a lease component and should be recognized as site rental revenues on a ratable basis over the associated estimated lease term. In addition, the Company has also made other adjustments to the financial statements referenced above to correct errors that were not material to its condensed consolidated financial statements. Such immaterial adjustments are related to a revision in the presentation of certain tower installation activities from a gross basis to a net basis, including the associated removal of certain amounts historically categorized as capital expenditures. These immaterial adjustments relate exclusively to the Company's Towers segment. Collectively, the restatement adjustments and other immaterial adjustments are referred to herein as "Historical Adjustments." In addition to the restatement of the condensed consolidated financial statements, certain historical information in the notes to the condensed consolidated financial statements have been restated to reflect the impact of the Historical Adjustments. Condensed Consolidated Balance Sheet June 30, 2019 As Reported Restatement Adjustments Other Adjustments As Restated ASSETS Property and equipment, net $ 14,151 $ — $ (23 ) $ 14,128 Total assets 38,147 — (23 ) 38,124 LIABILITIES AND EQUITY Current liabilities: Deferred revenues 503 104 — 607 Total current liabilities 1,698 104 — 1,802 Other long-term liabilities 2,028 383 — 2,411 Total liabilities 26,624 487 — 27,111 CCIC stockholders' equity: Dividends/distributions in excess of earnings (6,277 ) (487 ) (23 ) (6,787 ) Total equity 11,523 (487 ) (23 ) 11,013 Total liabilities and equity $ 38,147 $ — $ (23 ) $ 38,124 Condensed Consolidated Statement of Operations and Comprehensive Income (Loss) Three Months Ended June 30, 2019 As Reported Restatement Adjustments Other Adjustments As Restated Net revenues: Site rental $ 1,238 $ 25 $ — $ 1,263 Services and other 240 (55 ) (1 ) 184 Net revenues 1,478 (30 ) (1 ) 1,447 Operating expenses: Costs of operations (a) : Services and other 138 — (1 ) 137 Total operating expenses 1,059 — (1 ) 1,058 Operating income (loss) 419 (30 ) — 389 Income (loss) before income taxes 250 (30 ) — 220 Net income (loss) attributable to CCIC stockholders 246 (30 ) — 216 Net income (loss) attributable to CCIC common stockholders $ 218 $ (30 ) $ — $ 188 Net income (loss) $ 246 $ (30 ) $ — $ 216 Comprehensive income (loss) attributable to CCIC stockholders $ 246 $ (30 ) $ — $ 216 Net income (loss) attributable to CCIC common stockholders, per common share: Net income (loss) attributable to CCIC common stockholders - basic $ 0.52 $ (0.07 ) $ — $ 0.45 Net income (loss) attributable to CCIC common stockholders - diluted $ 0.52 $ (0.07 ) $ — $ 0.45 Six Months Ended June 30, 2019 As Reported Restatement Adjustments Other Adjustments As Restated Net revenues: Site rental $ 2,457 $ 48 $ — $ 2,505 Services and other 447 (95 ) (2 ) 350 Net revenues 2,904 (47 ) (2 ) 2,855 Operating expenses: Costs of operations (a) : Services and other 263 — (2 ) 261 Total operating expenses 2,101 — (2 ) 2,099 Operating income (loss) 803 (47 ) — 756 Income (loss) before income taxes 466 (47 ) — 419 Net income (loss) attributable to CCIC stockholders 456 (47 ) — 409 Net income (loss) attributable to CCIC common stockholders $ 399 $ (47 ) $ — $ 352 Net income (loss) $ 456 $ (47 ) $ — $ 409 Comprehensive income (loss) attributable to CCIC stockholders $ 456 $ (47 ) $ — $ 409 Net income (loss) attributable to CCIC common stockholders, per common share: Net income (loss) attributable to CCIC common stockholders - basic $ 0.96 $ (0.11 ) $ — $ 0.85 Net income (loss) attributable to CCIC common stockholders - diluted $ 0.95 $ (0.11 ) $ — $ 0.84 (a) Exclusive of depreciation, amortization and accretion shown separately. Condensed Consolidated Statement of Cash Flows Six Months Ended June 30, 2019 As Reported Restatement Adjustments Other Adjustments As Restated Cash flows from operating activities: Net income (loss) $ 456 $ (47 ) $ — $ 409 Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities: Increase (decrease) in other liabilities 30 47 — 77 Net cash provided by (used for) operating activities 1,227 — — 1,227 Net increase (decrease) in cash, cash equivalents, and restricted cash 16 — — 16 Cash, cash equivalents, and restricted cash at beginning of period 413 — — 413 Cash, cash equivalents, and restricted cash at end of period $ 429 $ — $ — $ 429

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Significant Accounting Policies	Summary of Significant Accounting Policies Recently Adopted Accounting Pronouncements No accounting pronouncements adopted during the six months ended June 30, 2020 had a material impact on the Company's condensed consolidated financial statements. Recent Accounting Pronouncements Not Yet Adopted No new accounting pronouncements issued but not yet adopted are expected to have a material impact on the Company's condensed consolidated financial statements.

Revenues (Notes)

Revenues (Notes)	3 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Revenues Site rental revenues The Company generates site rental revenues from its core business by providing tenants with access, including space or capacity, to its shared communications infrastructure via long-term tenant contracts in various forms, including lease, license, sublease and service agreements. Providing such access over the length of the tenant contract term represents the Company’s sole performance obligation under its tenant contracts. Site rental revenues from the Company's tenant contracts are recognized on a straight-line, ratable basis over the fixed, non-cancelable term of the relevant tenant contract, which generally ranges from five to 15 years for wireless tenants and three to 20 years for the Company's fiber solutions tenants (including from organizations with high-bandwidth and multi-location demands), regardless of whether the payments from the tenant are received in equal monthly amounts during the life of the tenant contract. Certain of the Company's tenant contracts contain (1) fixed escalation clauses (such as fixed dollar or fixed percentage increases) or inflation-based escalation clauses (such as those tied to the CPI), (2) multiple renewal periods exercisable at the tenant's option and (3) only limited termination rights at the applicable tenant's option through the current term. If the payment terms call for fixed escalations, upfront payments, or rent-free periods, the revenue is recognized on a straight-line basis over the fixed, non-cancelable term of the agreement. When calculating straight-line rental revenues, the Company considers all fixed elements of tenant contractual escalation provisions, even if such escalation provisions contain a variable element in addition to a minimum. The Company's assets related to straight-line site rental revenues include current amounts of $134 million included in "Other current assets" and non-current amounts of $1.4 billion included in "Deferred site rental receivables" as of June 30, 2020 . Amounts billed or received prior to being earned are deferred and reflected in "Deferred revenues" and "Other long-term liabilities." Amounts to which the Company has an unconditional right to payment, which are related to both satisfied or partially satisfied performance obligations, are recorded within "Receivables, net" on the Company's condensed consolidated balance sheet. Services and other revenues As part of the Company’s effort to provide comprehensive communications infrastructure solutions, as an ancillary business, the Company offers certain services primarily relating to its Towers segment, predominately consisting of (1) site development services and (2) installation services. Upon contract commencement, the Company assesses its services to tenants and identifies performance obligations for each promise to provide a distinct service. The Company may have multiple performance obligations for site development services, which primarily include: structural analysis, zoning, permitting and construction drawings. For each of the above performance obligations, services revenues are recognized at completion of the applicable performance obligation, which represents the point at which the Company believes it has transferred goods or services to the tenant. The revenue recognized is based on an allocation of the transaction price among the performance obligations in a respective contract based on estimated standalone selling price. The volume and mix of site development services may vary among contracts and may include a combination of some or all of the above performance obligations. Payments generally are due within 45 to 60 days and generally do not contain variable-consideration provisions. The transaction price for the Company's tower installation services consists of amounts for (1) permanent improvements to the Company's towers that represent a lease component and (2) the performance of the service. Amounts under the Company's tower installation service agreements that represent a lease component are recognized as site rental revenues on a straight-line basis over the length of the associated estimated lease term. For the performance of the installation service, the Company has one performance obligation, which is satisfied at the time of the applicable installation or augmentation and recognized as services and other revenues. Since performance obligations are typically satisfied prior to receiving payment from tenants, the unconditional right to payment is recorded within "Receivables, net" on the Company’s condensed consolidated balance sheet. The vast majority of the Company’s services generally have a duration of one year or less. Additional information on revenues The following additional information on revenues reflect the impact of the Historical Adjustments, where applicable, as discussed in note 2. As of January 1, 2020 and June 30, 2020 , $2.9 billion and $3.0 billion , respectively, of unrecognized revenue was reported in "Deferred revenues" and "Other long-term liabilities" on our condensed consolidated balance sheet. During the six months ended June 30, 2020 , approximately $300 million of the January 1, 2020 unrecognized revenue balance was recognized as revenue. During the six months ended June 30, 2019 , approximately $265 million of the January 1, 2019 unrecognized revenue balance was recognized as revenue. The following table is a summary of the non-cancelable contracted amounts owed to the Company by tenants pursuant to tenant contracts in effect as of June 30, 2020 . Six Months Ending December 31, Years Ending December 31, 2020 2021 2022 2023 2024 Thereafter Total Contracted amounts (a) $ 2,228 $ 4,157 $ 3,921 $ 3,280 $ 2,559 $ 7,480 $ 23,625 (a) Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less. See note 11 for further information regarding the Company's operating segments.

Debt and Other Obligations

Debt and Other Obligations	3 Months Ended
	Jun. 30, 2020
Debt and Other Obligations [Abstract]
Debt and Other Obligations	Debt and Other Obligations The table below sets forth the Company's debt and other obligations as of June 30, 2020 . Original Issue Date Final Maturity Date (a) Balance as of June 30, 2020 Balance as of December 31, 2019 Stated Interest Rate as of June 30, 2020 (a) 3.849% Secured Notes Dec. 2012 Apr. 2023 $ 996 $ 995 3.9 % Secured Notes, Series 2009-1, Class A-2 July 2009 Aug. 2029 64 67 9.0 % Tower Revenue Notes, Series 2015-1 May 2015 May 2042 (b) 299 298 3.2 % Tower Revenue Notes, Series 2018-1 July 2018 July 2043 (b) 248 248 3.7 % Tower Revenue Notes, Series 2015-2 May 2015 May 2045 (b) 695 694 3.7 % Tower Revenue Notes, Series 2018-2 July 2018 July 2048 (b) 743 742 4.2 % Finance leases and other obligations Various Various (c) 225 227 Various Total secured debt $ 3,270 $ 3,271 2016 Revolver Jan. 2016 June 2024 $ — (d) $ 525 N/A (e) 2016 Term Loan A Jan. 2016 June 2024 2,281 2,310 1.3 % (e) Commercial Paper Notes N/A (f) N/A (f) — (f) 155 N/A 3.400% Senior Notes Feb./May 2016 Feb. 2021 (h)(i) 850 850 3.4 % 2.250% Senior Notes Sept. 2016 Sept. 2021 (h) 699 698 2.3 % 4.875% Senior Notes Apr. 2014 Apr. 2022 (h) 847 846 4.9 % 5.250% Senior Notes Oct. 2012 Jan. 2023 1,644 1,644 5.3 % 3.150% Senior Notes Jan. 2018 July 2023 745 744 3.2 % 3.200% Senior Notes Aug. 2017 Sept. 2024 745 744 3.2 % 1.350% Senior Notes June 2020 July 2025 (h) 494 — 1.4 % 4.450% Senior Notes Feb. 2016 Feb. 2026 894 893 4.5 % 3.700% Senior Notes May 2016 June 2026 745 744 3.7 % 4.000% Senior Notes Feb. 2017 Mar. 2027 495 495 4.0 % 3.650% Senior Notes Aug. 2017 Sept. 2027 993 993 3.7 % 3.800% Senior Notes Jan. 2018 Feb. 2028 990 990 3.8 % 4.300% Senior Notes Feb. 2019 Feb. 2029 592 592 4.3 % 3.100% Senior Notes Aug. 2019 Nov. 2029 544 543 3.1 % 3.300% Senior Notes Apr. 2020 July 2030 (g) 736 — 3.3 % 2.250% Senior Notes June 2020 Jan. 2031 (h) 1,087 — 2.3 % 4.750% Senior Notes May 2017 May 2047 344 344 4.8 % 5.200% Senior Notes Feb. 2019 Feb. 2049 395 395 5.2 % 4.000% Senior Notes Aug. 2019 Nov. 2049 345 345 4.0 % 4.150% Senior Notes Apr. 2020 July 2050 (g) 489 — 4.2 % 3.250% Senior Notes June 2020 Jan. 2051 (h) 889 — 3.3 % Total unsecured debt $ 17,843 $ 14,850 Total debt and other obligations 21,113 18,121 Less: current maturities and short-term debt and other current obligations 99 100 Non-current portion of long-term debt and other long-term obligations $ 21,014 $ 18,021 (a) See the 2019 Form 10-K, including note 9 , for additional information regarding the maturity and principal amortization provisions and interest rates relating to the Company's indebtedness. (b) If the respective series of Tower Revenue Notes are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of June 30, 2020, the Tower Revenue Notes have principal amounts of $300 million , $250 million , $700 million and $750 million , with anticipated repayment dates in 2022, 2023, 2025 and 2028, respectively. (c) The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates ranging up to 10% and mature in periods ranging from less than one year to approximately 30 years . (d) As of June 30, 2020 , the undrawn availability under the 2016 Revolver was $5.0 billion . (e) Both the 2016 Revolver and 2016 Term Loan A bear interest, at our option, at either (1) LIBOR plus a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.125% to 0.350% , based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver. (f) Notes under the CP Program may be issued, repaid and re-issued from time to time, with an aggregate principal amount of Commercial Paper Notes outstanding under the CP Program at any time not to exceed $1.0 billion . The net proceeds of the Commercial Paper Notes are expected to be used for general corporate purposes. The maturities of the 2019 Commercial Paper Notes, when outstanding, may vary but may not exceed 397 days from the date of issue. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. As of June 30, 2020 , there were no outstanding Commercial Paper Notes. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding commercial paper issuances generally have short-term maturities, the Company classifies the outstanding issuances, when applicable, as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis. (g) In April 2020, the Company issued $1.25 billion aggregate principal amount of senior unsecured notes ("April 2020 Senior Notes"), which consisted of (1) $750 million aggregate principal amount of 3.300% senior unsecured notes due July 2030 and (2) $500 million aggregate principal amount of 4.150% senior unsecured notes due July 2050. The company used the net proceeds of the April 2020 Senior Notes offering to repay outstanding indebtedness under the 2016 Revolver. (h) In June 2020, the Company issued $2.5 billion aggregate principal amount of senior unsecured notes ("June 2020 Senior Notes"), which consisted of (1) $500 million aggregate principal amount of 1.350% senior unsecured notes due July 2025, (2) $1.1 billion aggregate principal amount of 2.250% senior unsecured notes due January 2031 and (3) $900 million aggregate principal amount of 3.250% senior unsecured notes due January 2051. In July 2020, the Company used the net proceeds of the June 2020 Senior Notes offering, together with available cash, to redeem all of the previously outstanding 3.400% Senior Notes, 2.250% Senior Notes and 4.875% Senior Notes. See note 13 for further discussion regarding the use of proceeds. (i) While the 3.400% Senior Notes have a final maturity date within one year, the Company classified such notes as long-term based on its ability and intent to refinance the notes on a long-term basis. The following are the scheduled principal payments and final maturities of the total debt and other long-term obligations of the Company outstanding as of June 30, 2020 , which do not consider the principal payments that will commence following the anticipated repayment dates on the Tower Revenue Notes. Six Months Ending December 31, Years Ending December 31, Unamortized Adjustments, Net Total Debt and Other Obligations Outstanding 2020 2021 (b) 2022 2023 2024 Thereafter Total Cash Obligations Scheduled principal payments and final maturities (a) $ 53 $ 1,677 $ 1,001 $ 3,605 $ 2,648 $ 12,287 $ 21,271 $ (158 ) $ 21,113 (a) Inclusive of the final maturities of the previously outstanding 3.400% Senior Notes, 2.250% Senior Notes and 4.875% Senior Notes, which were redeemed in July 2020. See note 13 for further discussion regarding the July redemption of previously outstanding debt. (b) Inclusive of $850 million of 3.400% Senior Notes due February 2021. While the 3.400% Senior Notes have a final maturity date within one year, the Company classified such notes as long-term based on its ability and intent to refinance the notes on a long-term basis. Interest Expense and Amortization of Deferred Financing Costs The components of interest expense and amortization of deferred financing costs are as follows: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Interest expense on debt obligations $ 176 $ 169 $ 350 $ 336 Amortization of deferred financing costs and adjustments on long-term debt 6 5 11 10 Other, net of capitalized interest (4 ) (5 ) (8 ) (9 ) Total $ 178 $ 169 $ 353 $ 337

Fair Value Disclosures

Fair Value Disclosures	3 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures Level in Fair Value Hierarchy June 30, 2020 December 31, 2019 Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents 1 $ 2,514 $ 2,514 $ 196 $ 196 Restricted cash, current and non-current 1 159 159 142 142 Liabilities: Total debt and other obligations 2 21,113 23,018 18,121 19,170 The fair value of cash and cash equivalents and restricted cash approximate the carrying value. The Company determines the fair value of its debt securities based on indicative, non-binding quotes from brokers. Quotes from brokers require judgment and are based on the brokers' interpretation of market information, including implied credit spreads for similar borrowings on recent trades or bid/ask prices or quotes from active markets if available. Since December 31, 2019

Income Taxes

Income Taxes	3 Months Ended
	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company operates as a REIT for U.S. federal income tax purposes. As a REIT, the Company is generally entitled to a deduction for dividends that it pays and therefore is not subject to U.S. federal corporate income tax on its net taxable income that is currently distributed to its stockholders. The Company also may be subject to certain federal, state, local and foreign taxes on its income and assets, including (1) taxes on any undistributed income, (2) taxes related to the TRSs, (3) franchise taxes, (4) property taxes, and (5) transfer taxes. In addition, the Company could under certain circumstances be required to pay an excise or penalty tax, which could be significant in amount, in order to utilize one or more relief provisions under the Internal Revenue Code of 1986, as amended, to maintain qualification for taxation as a REIT. The Company's TRS assets and operations will continue to be subject, as applicable, to federal and state corporate income taxes or to foreign taxes in the jurisdictions in which such assets and operations are located. The Company's foreign assets and operations (including its tower operations in Puerto Rico) are subject to foreign income taxes in the jurisdictions in which such assets and operations are located, regardless of whether they are included in a TRS or not. For the six months ended June 30, 2020 and 2019 , the Company's effective tax rate differed from the federal statutory rate predominately due to the Company's REIT status, including the dividends paid deduction.

Per Share Information

Per Share Information	3 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Per Share Information	Per Share Information Basic net income (loss) attributable to CCIC common stockholders, per common share, excludes dilution and is computed by dividing net income (loss) attributable to CCIC common stockholders by the weighted-average number of common shares outstanding during the period. For the three and six months ended June 30, 2020 and 2019 , diluted net income (loss) attributable to CCIC common stockholders, per common share, is computed by dividing net income (loss) attributable to CCIC common stockholders by the weighted-average number of common shares outstanding during the period, plus any potential dilutive common share equivalents, including shares issuable upon (1) the vesting of restricted stock units as determined under the treasury stock method and (2) conversion of the Company's 6.875% Mandatory Convertible Preferred Stock , as determined under the if-converted method. The table below also gives effect to the Historical Adjustments, as described in note 2. Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (As Restated) (As Restated) Net income (loss) attributable to CCIC stockholders $ 200 $ 216 $ 386 $ 409 Dividends on preferred stock (28 ) (28 ) (57 ) (57 ) Net income (loss) attributable to CCIC common stockholders for basic and diluted computations $ 172 $ 188 $ 329 $ 352 Weighted-average number of common shares outstanding (in millions): Basic weighted-average number of common stock outstanding 417 416 416 415 Effect of assumed dilution from potential issuance of common shares relating to restricted stock units 2 2 2 2 Diluted weighted-average number of common shares outstanding 419 418 418 417 Net income (loss) attributable to CCIC common stockholders, per common share: Basic $ 0.41 $ 0.45 $ 0.79 $ 0.85 Diluted $ 0.41 $ 0.45 $ 0.79 $ 0.84 Dividends/distributions declared per share of common stock $ 1.20 $ 1.125 $ 2.40 $ 2.250 Dividends/distributions declared per share of preferred stock $ 17.1875 $ 17.1875 $ 34.3750 $ 34.3750 During the six months ended June 30, 2020 , the Company granted one million restricted stock units. For the six months ended June 30, 2020 , 15 million common share equivalents related to the 6.875% Mandatory Convertible Preferred Stock were excluded from the dilutive common shares because the impact of such conversion would be anti-dilutive, based on the Company's common stock price as of June 30, 2020 .

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company is involved in various claims, lawsuits or proceedings arising in the ordinary course of business. While there are uncertainties inherent in the ultimate outcome of such matters and it is impossible to presently determine the ultimate costs or losses that may be incurred, if any, management believes the resolution of such uncertainties and the incurrence of such costs should not have a material adverse effect on the Company's condensed consolidated financial position or results of operations. Additionally, the Company and certain of its subsidiaries are contingently liable for commitments or performance guarantees arising in the ordinary course of business, including certain letters of credit or surety bonds. In addition, see note 1 for a discussion of the Company's option to purchase approximately 53% of its towers at the end of their respective lease terms. The Company has no obligation to exercise such purchase options. SEC Investigation In September 2019, the Company received a subpoena from the SEC requesting certain documents from 2015 through the present, primarily related to the Company's long-standing capitalization and expense policies for tenant upgrades and installations in its services business. Prior to receiving this subpoena, the Company previously provided information to the SEC related to certain services-related transactions. The Company is cooperating fully with the SEC's investigation and cannot predict the ultimate timing, scope or outcome of this matter. Shareholder Litigation In February and March 2020, putative securities class action suits were filed in the United States District Court for the District of New Jersey against the Company and certain of its current officers. The lawsuits were filed on behalf of investors that purchased or otherwise acquired stock of the Company between February 26, 2018 and February 26, 2020. The allegations relate to allegedly false or misleading statements or other failures to disclose information about the Company's business, operations and prospects. The complaints seek unspecified money damages and the award of the plaintiffs' costs and expenses incurred in the respective class action. The Company is currently unable to determine the likelihood of an outcome or estimate a range of reasonably possible losses, if any, with respect to these lawsuits. The Company believes these lawsuits are without merit and intends to defend itself vigorously. During the quarter ended June 30, 2020, derivative lawsuits were filed in the United States District Court for the District of Delaware, against the Company's current directors and certain of its current officers and the Company as a nominal defendant. Each of the complaints alleges, among other things, breaches of fiduciary duties, waste of corporate assets, unjust enrichment, and false or misleading statements. Each of the complaints seeks, among other things, unspecified money damages, costs and expenses, restitution from the defendants, and an order requiring the Company to implement certain corporate governance reforms. As a nominal defendant, no monetary relief is sought against the Company itself. In June 2020, the derivative lawsuits were consolidated as In re Crown Castle International Corp. Derivative Litigation , C.A. No. 20-00606-MN in the United States District Court for the District of Delaware. Durham Lawsuits The Company has received notices of claims and has been named as one of several defendants in lawsuits stemming from an April 2019 gas leak explosion in Durham, North Carolina, which occurred near an area where the Company's subcontractors were installing fiber. The explosion resulted in two fatalities, physical injuries (some of which were serious), and property damage to surrounding buildings and businesses. Currently, the Company is unable to determine the likelihood of an outcome or estimate a range of possible losses, if any, related to these lawsuits.

Equity

Equity	3 Months Ended
	Jun. 30, 2020
Equity [Abstract]
Equity	Equity Declaration and Payment of Dividends During the six months ended June 30, 2020 , the following dividends/distributions were declared or paid: Equity Type Declaration Date Record Date Payment Date Dividends Per Share Aggregate Payment Amount Common Stock February 20, 2020 March 13, 2020 March 31, 2020 $ 1.20 $ 504 (a) Common Stock May 14, 2020 June 12, 2020 June 30, 2020 $ 1.20 $ 504 (a) 6.875% Mandatory Convertible Preferred Stock December 9, 2019 January 15, 2020 February 3, 2020 $ 17.1875 $ 28 6.875% Mandatory Convertible Preferred Stock March 12, 2020 April 15, 2020 May 1, 2020 $ 17.1875 $ 28 6.875% Mandatory Convertible Preferred Stock June 19, 2020 July 15, 2020 August 3, 2020 $ 17.1875 $ 28 (a) Inclusive of dividends accrued for holders of unvested restricted stock units, which will be paid when and if the restricted stock units vest. Purchases of the Company's Common Stock For the six months ended June 30, 2020 , the Company purchased 0.4 million shares of its common stock utilizing $74 million in cash. The shares of common stock purchased relate to shares withheld in connection with the payment of withholding taxes upon vesting of restricted stock units. 2018 "At-the-Market" Stock Offering Program In April 2018, the Company established an "at-the-market" stock offering program through which it may issue and sell shares of its common stock having an aggregate gross sales price of up to $750 million ("2018 ATM Program"). Sales under the 2018 ATM Program may be made by means of ordinary brokers' transactions on the NYSE or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or, subject to our specific instructions, at negotiated prices. The Company intends to use the net proceeds from any sales under the 2018 ATM Program for general corporate purposes, which may include (1) the funding of future acquisitions or investments or (2) the repayment or repurchase of any outstanding indebtedness. The Company has not sold any shares of common stock under the 2018 ATM Program.

Operating Segments

Operating Segments	3 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Operating Segments	Operating Segments The Company's operating segments consist of (1) Towers and (2) Fiber. The Towers segment provides access, including space or capacity, to the Company's approximately 40,000 towers geographically dispersed throughout the U.S. The Towers segment also reflects certain ancillary services relating to the Company's towers, predominately consisting of site development services and installation services. The Fiber segment provides access, including space or capacity, to the Company's approximately 80,000 route miles of fiber primarily supporting small cell networks and fiber solutions geographically dispersed throughout the U.S. The measurements of profit or loss used by the Company's chief operating decision maker ("CODM") to evaluate the performance of its operating segments are (1) segment site rental gross margin, (2) segment services and other gross margin and (3) segment operating profit. The Company defines segment site rental gross margin as segment site rental revenues less segment site rental cost of operations, which excludes stock-based compensation expense and prepaid lease purchase price adjustments recorded in consolidated cost of operations. The Company defines segment services and other gross margin as segment services and other revenues less segment services and other cost of operations, which excludes stock-based compensation expense recorded in consolidated cost of operations. The Company defines segment operating profit as segment site rental gross margin plus segment services and other gross margin, less selling, general and administrative expenses attributable to the respective segment. All of these measurements of profit or loss are exclusive of depreciation, amortization and accretion, which are shown separately. The following tables set forth the Company's segment operating results for the three and six months ended June 30, 2020 and 2019. Costs that are directly attributable to Towers and Fiber are assigned to those respective segments. Additionally, certain costs are shared across segments and are reflected in the Company's segment measures through allocations that management believes to be reasonable. The "Other" column (1) represents amounts excluded from specific segments, such as asset write-down charges, acquisition and integration costs, depreciation, amortization and accretion, amortization of prepaid lease purchase price adjustments, interest expense and amortization of deferred financing costs, gains (losses) on retirement of long-term obligations, net gain (loss) on interest rate swaps, gains (losses) on foreign currency swaps, interest income, other income (expense), income (loss) from discontinued operations, and stock-based compensation expense, and (2) reconciles segment operating profit to income (loss) before income taxes, as the amounts are not utilized in assessing each segment’s performance. The "Other" total assets balance includes corporate assets such as cash and cash equivalents which have not been allocated to specific segments. There are no significant revenues resulting from transactions between the Company's operating segments. The tables below also give effect to the Historical Adjustments, as described in note 2. Each of the Historical Adjustments for the three and six months ended June 30, 2019 are attributable only to the Towers segment. Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 (As Restated) Towers Fiber Other Consolidated Total Towers Fiber Other Consolidated Total Segment site rental revenues $ 868 $ 451 $ 1,319 $ 841 $ 422 $ 1,263 Segment services and other revenues 117 4 121 181 3 184 Segment revenues 985 455 1,440 1,022 425 1,447 Segment site rental cost of operations 218 150 368 218 136 354 Segment services and other cost of operations 104 2 106 133 2 135 Segment cost of operations (a)(b) 322 152 474 351 138 489 Segment site rental gross margin 650 301 951 623 286 909 Segment services and other gross margin 13 2 15 48 1 49 Segment selling, general and administrative expenses (b) 24 45 69 24 51 75 Segment operating profit (loss) 639 258 897 647 236 883 Other selling, general and administrative expenses $ 65 65 $ 56 56 Stock-based compensation expense 37 37 32 32 Depreciation, amortization and accretion 402 402 393 393 Interest expense and amortization of deferred financing costs 178 178 169 169 Other (income) expenses to reconcile to income (loss) before income taxes (c) 9 9 13 13 Income (loss) before income taxes $ 206 $ 220 Capital expenditures $ 92 $ 310 $ 12 $ 414 $ 136 $ 371 $ 11 $ 518 Total assets (at period end) $ 22,200 $ 15,616 $ 3,085 $ 40,901 $ 22,126 $ 15,215 $ 783 $ 38,124 (a) Exclusive of depreciation, amortization and accretion shown separately. (b) Segment cost of operations excludes (1) stock-based compensation of $7 million and $8 million for the three months ended June 30, 2020 and 2019, respectively, and (2) prepaid lease purchase price adjustments of $4 million and $5 million for the three months ended June 30, 2020 and 2019, respectively. Selling, general and administrative expenses exclude stock-based compensation expense of $30 million and $24 million for the three months ended June 30, 2020 and 2019, respectively. (c) See condensed consolidated statement of operations for further information. Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 (As Restated) Towers Fiber Other Consolidated Total Towers Fiber Other Consolidated Total Segment site rental revenues $ 1,735 $ 894 $ 2,629 $ 1,669 $ 836 $ 2,505 Segment services and other revenues 225 7 232 343 7 350 Segment revenues 1,960 901 2,861 2,012 843 2,855 Segment site rental cost of operations 432 302 734 429 277 706 Segment services and other cost of operations 199 4 203 252 5 257 Segment cost of operations (a)(b) 631 306 937 681 282 963 Segment site rental gross margin 1,303 592 1,895 1,240 559 1,799 Segment services and other gross margin 26 3 29 91 2 93 Segment selling, general and administrative expenses (b) 48 96 144 50 98 148 Segment operating profit (loss) 1,281 499 1,780 1,281 463 1,744 Other selling, general and administrative expenses $ 135 135 $ 112 112 Stock-based compensation expense 73 73 61 61 Depreciation, amortization and accretion 801 801 787 787 Interest expense and amortization of deferred financing costs 353 353 337 337 Other (income) expenses to reconcile to income (loss) before income taxes (c) 21 21 28 28 Income (loss) before income taxes $ 397 $ 419 Capital expenditures $ 197 $ 638 $ 26 $ 861 $ 257 $ 726 $ 15 $ 998 (a) Exclusive of depreciation, amortization and accretion shown separately. (b) Segment cost of operations excludes (1) stock-based compensation expense of $13 million and $14 million for the six months ended June 30, 2020 and 2019, respectively, and (2) prepaid lease purchase price adjustments of $9 million and $10 million for the six months ended June 30, 2020 and 2019, respectively. Selling, general and administrative expenses exclude stock-based compensation expense of $60 million and $47 million for the six months ended June 30, 2020 and 2019, respectively. (c)

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	3 Months Ended
	Jun. 30, 2020
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information The following table is a summary of the Company's supplemental cash flow information: Six Months Ended June 30, 2020 2019 Supplemental disclosure of cash flow information: Cash payments related to operating lease liabilities (a) $ 268 $ 271 Interest paid 337 318 Income taxes paid 1 9 Supplemental disclosure of non-cash operating, investing and financing activities: New ROU assets obtained in exchange for operating lease liabilities 260 183 Increase (decrease) in accounts payable for purchases of property and equipment 13 18 Purchase of property and equipment under finance leases and installment purchases 14 22 (a) Excludes the Company's contingent payment pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved. The reconciliation of cash, cash equivalents, and restricted cash reported within various lines on the condensed consolidated balance sheet to amounts reported in the condensed consolidated statement of cash flows is shown below. June 30, 2020 December 31, 2019 Cash and cash equivalents $ 2,514 $ 196 Restricted cash, current 154 137 Restricted cash reported within other assets, net 5 5 Cash, cash equivalents and restricted cash $ 2,673 $ 338

Subsequent Events (Notes)

Subsequent Events (Notes)	3 Months Ended
	Jun. 30, 2020
Subsequent Event [Line Items]
Subsequent Events [Text Block]	Subsequent Events June 2020 Senior Notes Offering Use of Proceeds On July 6, 2020, the Company used the net proceeds of the June 2020 Senior Notes offering, together with available cash, to redeem all of the previously outstanding (1) 3.400% Senior Notes due 2021, (2) 2.250% Senior Notes due 2021 and (3) 4.875% Senior Notes due 2022, which resulted in a loss on retirement of long-term obligations of $95 million that will be reflected in the third quarter 2020 financial statements, predominantly as a result of make-whole premiums.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Recent accounting prounouncements	Recently Adopted Accounting Pronouncements No accounting pronouncements adopted during the six months ended June 30, 2020 had a material impact on the Company's condensed consolidated financial statements. Recent Accounting Pronouncements Not Yet Adopted No new accounting pronouncements issued but not yet adopted are expected to have a material impact on the Company's condensed consolidated financial statements.

Restatement of Previously Iss_2

Restatement of Previously Issued Condensed Consolidated Financial Statements (Tables)	6 Months Ended
	Jun. 30, 2020
Accounting Changes and Error Corrections [Abstract]
Condensed Balance Sheet [Table Text Block]	Condensed Consolidated Balance Sheet June 30, 2019 As Reported Restatement Adjustments Other Adjustments As Restated ASSETS Property and equipment, net $ 14,151 $ — $ (23 ) $ 14,128 Total assets 38,147 — (23 ) 38,124 LIABILITIES AND EQUITY Current liabilities: Deferred revenues 503 104 — 607 Total current liabilities 1,698 104 — 1,802 Other long-term liabilities 2,028 383 — 2,411 Total liabilities 26,624 487 — 27,111 CCIC stockholders' equity: Dividends/distributions in excess of earnings (6,277 ) (487 ) (23 ) (6,787 ) Total equity 11,523 (487 ) (23 ) 11,013 Total liabilities and equity $ 38,147 $ — $ (23 ) $ 38,124
Condensed Income Statement [Table Text Block]	Condensed Consolidated Statement of Operations and Comprehensive Income (Loss) Three Months Ended June 30, 2019 As Reported Restatement Adjustments Other Adjustments As Restated Net revenues: Site rental $ 1,238 $ 25 $ — $ 1,263 Services and other 240 (55 ) (1 ) 184 Net revenues 1,478 (30 ) (1 ) 1,447 Operating expenses: Costs of operations (a) : Services and other 138 — (1 ) 137 Total operating expenses 1,059 — (1 ) 1,058 Operating income (loss) 419 (30 ) — 389 Income (loss) before income taxes 250 (30 ) — 220 Net income (loss) attributable to CCIC stockholders 246 (30 ) — 216 Net income (loss) attributable to CCIC common stockholders $ 218 $ (30 ) $ — $ 188 Net income (loss) $ 246 $ (30 ) $ — $ 216 Comprehensive income (loss) attributable to CCIC stockholders $ 246 $ (30 ) $ — $ 216 Net income (loss) attributable to CCIC common stockholders, per common share: Net income (loss) attributable to CCIC common stockholders - basic $ 0.52 $ (0.07 ) $ — $ 0.45 Net income (loss) attributable to CCIC common stockholders - diluted $ 0.52 $ (0.07 ) $ — $ 0.45 Six Months Ended June 30, 2019 As Reported Restatement Adjustments Other Adjustments As Restated Net revenues: Site rental $ 2,457 $ 48 $ — $ 2,505 Services and other 447 (95 ) (2 ) 350 Net revenues 2,904 (47 ) (2 ) 2,855 Operating expenses: Costs of operations (a) : Services and other 263 — (2 ) 261 Total operating expenses 2,101 — (2 ) 2,099 Operating income (loss) 803 (47 ) — 756 Income (loss) before income taxes 466 (47 ) — 419 Net income (loss) attributable to CCIC stockholders 456 (47 ) — 409 Net income (loss) attributable to CCIC common stockholders $ 399 $ (47 ) $ — $ 352 Net income (loss) $ 456 $ (47 ) $ — $ 409 Comprehensive income (loss) attributable to CCIC stockholders $ 456 $ (47 ) $ — $ 409 Net income (loss) attributable to CCIC common stockholders, per common share: Net income (loss) attributable to CCIC common stockholders - basic $ 0.96 $ (0.11 ) $ — $ 0.85 Net income (loss) attributable to CCIC common stockholders - diluted $ 0.95 $ (0.11 ) $ — $ 0.84 (a) Exclusive of depreciation, amortization and accretion shown separately.
Condensed Cash Flow Statement [Table Text Block]	Condensed Consolidated Statement of Cash Flows Six Months Ended June 30, 2019 As Reported Restatement Adjustments Other Adjustments As Restated Cash flows from operating activities: Net income (loss) $ 456 $ (47 ) $ — $ 409 Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities: Increase (decrease) in other liabilities 30 47 — 77 Net cash provided by (used for) operating activities 1,227 — — 1,227 Net increase (decrease) in cash, cash equivalents, and restricted cash 16 — — 16 Cash, cash equivalents, and restricted cash at beginning of period 413 — — 413 Cash, cash equivalents, and restricted cash at end of period $ 429 $ — $ — $ 429

Revenues (Tables)

Revenues (Tables)	3 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Schedule of Contractual Revenue	The following table is a summary of the non-cancelable contracted amounts owed to the Company by tenants pursuant to tenant contracts in effect as of June 30, 2020 . Six Months Ending December 31, Years Ending December 31, 2020 2021 2022 2023 2024 Thereafter Total Contracted amounts (a) $ 2,228 $ 4,157 $ 3,921 $ 3,280 $ 2,559 $ 7,480 $ 23,625 (a) Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

Debt and Other Obligations (Tab

Debt and Other Obligations (Tables)	3 Months Ended
	Jun. 30, 2020
Debt and Other Obligations [Abstract]
Schedule of Long-Term Debt Instruments	The table below sets forth the Company's debt and other obligations as of June 30, 2020 . Original Issue Date Final Maturity Date (a) Balance as of June 30, 2020 Balance as of December 31, 2019 Stated Interest Rate as of June 30, 2020 (a) 3.849% Secured Notes Dec. 2012 Apr. 2023 $ 996 $ 995 3.9 % Secured Notes, Series 2009-1, Class A-2 July 2009 Aug. 2029 64 67 9.0 % Tower Revenue Notes, Series 2015-1 May 2015 May 2042 (b) 299 298 3.2 % Tower Revenue Notes, Series 2018-1 July 2018 July 2043 (b) 248 248 3.7 % Tower Revenue Notes, Series 2015-2 May 2015 May 2045 (b) 695 694 3.7 % Tower Revenue Notes, Series 2018-2 July 2018 July 2048 (b) 743 742 4.2 % Finance leases and other obligations Various Various (c) 225 227 Various Total secured debt $ 3,270 $ 3,271 2016 Revolver Jan. 2016 June 2024 $ — (d) $ 525 N/A (e) 2016 Term Loan A Jan. 2016 June 2024 2,281 2,310 1.3 % (e) Commercial Paper Notes N/A (f) N/A (f) — (f) 155 N/A 3.400% Senior Notes Feb./May 2016 Feb. 2021 (h)(i) 850 850 3.4 % 2.250% Senior Notes Sept. 2016 Sept. 2021 (h) 699 698 2.3 % 4.875% Senior Notes Apr. 2014 Apr. 2022 (h) 847 846 4.9 % 5.250% Senior Notes Oct. 2012 Jan. 2023 1,644 1,644 5.3 % 3.150% Senior Notes Jan. 2018 July 2023 745 744 3.2 % 3.200% Senior Notes Aug. 2017 Sept. 2024 745 744 3.2 % 1.350% Senior Notes June 2020 July 2025 (h) 494 — 1.4 % 4.450% Senior Notes Feb. 2016 Feb. 2026 894 893 4.5 % 3.700% Senior Notes May 2016 June 2026 745 744 3.7 % 4.000% Senior Notes Feb. 2017 Mar. 2027 495 495 4.0 % 3.650% Senior Notes Aug. 2017 Sept. 2027 993 993 3.7 % 3.800% Senior Notes Jan. 2018 Feb. 2028 990 990 3.8 % 4.300% Senior Notes Feb. 2019 Feb. 2029 592 592 4.3 % 3.100% Senior Notes Aug. 2019 Nov. 2029 544 543 3.1 % 3.300% Senior Notes Apr. 2020 July 2030 (g) 736 — 3.3 % 2.250% Senior Notes June 2020 Jan. 2031 (h) 1,087 — 2.3 % 4.750% Senior Notes May 2017 May 2047 344 344 4.8 % 5.200% Senior Notes Feb. 2019 Feb. 2049 395 395 5.2 % 4.000% Senior Notes Aug. 2019 Nov. 2049 345 345 4.0 % 4.150% Senior Notes Apr. 2020 July 2050 (g) 489 — 4.2 % 3.250% Senior Notes June 2020 Jan. 2051 (h) 889 — 3.3 % Total unsecured debt $ 17,843 $ 14,850 Total debt and other obligations 21,113 18,121 Less: current maturities and short-term debt and other current obligations 99 100 Non-current portion of long-term debt and other long-term obligations $ 21,014 $ 18,021 (a) See the 2019 Form 10-K, including note 9 , for additional information regarding the maturity and principal amortization provisions and interest rates relating to the Company's indebtedness. (b) If the respective series of Tower Revenue Notes are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of June 30, 2020, the Tower Revenue Notes have principal amounts of $300 million , $250 million , $700 million and $750 million , with anticipated repayment dates in 2022, 2023, 2025 and 2028, respectively. (c) The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates ranging up to 10% and mature in periods ranging from less than one year to approximately 30 years . (d) As of June 30, 2020 , the undrawn availability under the 2016 Revolver was $5.0 billion . (e) Both the 2016 Revolver and 2016 Term Loan A bear interest, at our option, at either (1) LIBOR plus a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.125% to 0.350% , based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver. (f) Notes under the CP Program may be issued, repaid and re-issued from time to time, with an aggregate principal amount of Commercial Paper Notes outstanding under the CP Program at any time not to exceed $1.0 billion . The net proceeds of the Commercial Paper Notes are expected to be used for general corporate purposes. The maturities of the 2019 Commercial Paper Notes, when outstanding, may vary but may not exceed 397 days from the date of issue. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. As of June 30, 2020 , there were no outstanding Commercial Paper Notes. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding commercial paper issuances generally have short-term maturities, the Company classifies the outstanding issuances, when applicable, as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis. (g) In April 2020, the Company issued $1.25 billion aggregate principal amount of senior unsecured notes ("April 2020 Senior Notes"), which consisted of (1) $750 million aggregate principal amount of 3.300% senior unsecured notes due July 2030 and (2) $500 million aggregate principal amount of 4.150% senior unsecured notes due July 2050. The company used the net proceeds of the April 2020 Senior Notes offering to repay outstanding indebtedness under the 2016 Revolver. (h) In June 2020, the Company issued $2.5 billion aggregate principal amount of senior unsecured notes ("June 2020 Senior Notes"), which consisted of (1) $500 million aggregate principal amount of 1.350% senior unsecured notes due July 2025, (2) $1.1 billion aggregate principal amount of 2.250% senior unsecured notes due January 2031 and (3) $900 million aggregate principal amount of 3.250% senior unsecured notes due January 2051. In July 2020, the Company used the net proceeds of the June 2020 Senior Notes offering, together with available cash, to redeem all of the previously outstanding 3.400% Senior Notes, 2.250% Senior Notes and 4.875% Senior Notes. See note 13 for further discussion regarding the use of proceeds. (i) While the 3.400% Senior Notes have a final maturity date within one year, the Company classified such notes as long-term based on its ability and intent to refinance the notes on a long-term basis.
Schedule of Maturities of Long-term Debt	The following are the scheduled principal payments and final maturities of the total debt and other long-term obligations of the Company outstanding as of June 30, 2020 , which do not consider the principal payments that will commence following the anticipated repayment dates on the Tower Revenue Notes. Six Months Ending December 31, Years Ending December 31, Unamortized Adjustments, Net Total Debt and Other Obligations Outstanding 2020 2021 (b) 2022 2023 2024 Thereafter Total Cash Obligations Scheduled principal payments and final maturities (a) $ 53 $ 1,677 $ 1,001 $ 3,605 $ 2,648 $ 12,287 $ 21,271 $ (158 ) $ 21,113 (a) Inclusive of the final maturities of the previously outstanding 3.400% Senior Notes, 2.250% Senior Notes and 4.875% Senior Notes, which were redeemed in July 2020. See note 13 for further discussion regarding the July redemption of previously outstanding debt. (b) Inclusive of $850 million of 3.400% Senior Notes due February 2021. While the 3.400% Senior Notes have a final maturity date within one year, the Company classified such notes as long-term based on its ability and intent to refinance the notes on a long-term basis.
Components of Interest Expense and Amortization of Deferred Financing Costs	Interest Expense and Amortization of Deferred Financing Costs The components of interest expense and amortization of deferred financing costs are as follows: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Interest expense on debt obligations $ 176 $ 169 $ 350 $ 336 Amortization of deferred financing costs and adjustments on long-term debt 6 5 11 10 Other, net of capitalized interest (4 ) (5 ) (8 ) (9 ) Total $ 178 $ 169 $ 353 $ 337

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	3 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Estimated Fair Values and Carrying Amounts of Assets and Liabilities	Level in Fair Value Hierarchy June 30, 2020 December 31, 2019 Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents 1 $ 2,514 $ 2,514 $ 196 $ 196 Restricted cash, current and non-current 1 159 159 142 142 Liabilities: Total debt and other obligations 2 21,113 23,018 18,121 19,170

Per Share Information (Tables)

Per Share Information (Tables)	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share Computations	Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (As Restated) (As Restated) Net income (loss) attributable to CCIC stockholders $ 200 $ 216 $ 386 $ 409 Dividends on preferred stock (28 ) (28 ) (57 ) (57 ) Net income (loss) attributable to CCIC common stockholders for basic and diluted computations $ 172 $ 188 $ 329 $ 352 Weighted-average number of common shares outstanding (in millions): Basic weighted-average number of common stock outstanding 417 416 416 415 Effect of assumed dilution from potential issuance of common shares relating to restricted stock units 2 2 2 2 Diluted weighted-average number of common shares outstanding 419 418 418 417 Net income (loss) attributable to CCIC common stockholders, per common share: Basic $ 0.41 $ 0.45 $ 0.79 $ 0.85 Diluted $ 0.41 $ 0.45 $ 0.79 $ 0.84 Dividends/distributions declared per share of common stock $ 1.20 $ 1.125 $ 2.40 $ 2.250 Dividends/distributions declared per share of preferred stock $ 17.1875 $ 17.1875 $ 34.3750 $ 34.3750

Equity (Tables)

Equity (Tables)	3 Months Ended
	Jun. 30, 2020
Equity [Abstract]
Dividends Declared	Declaration and Payment of Dividends During the six months ended June 30, 2020 , the following dividends/distributions were declared or paid: Equity Type Declaration Date Record Date Payment Date Dividends Per Share Aggregate Payment Amount Common Stock February 20, 2020 March 13, 2020 March 31, 2020 $ 1.20 $ 504 (a) Common Stock May 14, 2020 June 12, 2020 June 30, 2020 $ 1.20 $ 504 (a) 6.875% Mandatory Convertible Preferred Stock December 9, 2019 January 15, 2020 February 3, 2020 $ 17.1875 $ 28 6.875% Mandatory Convertible Preferred Stock March 12, 2020 April 15, 2020 May 1, 2020 $ 17.1875 $ 28 6.875% Mandatory Convertible Preferred Stock June 19, 2020 July 15, 2020 August 3, 2020 $ 17.1875 $ 28 (a) Inclusive of dividends accrued for holders of unvested restricted stock units, which will be paid when and if the restricted stock units vest.

Operating Segments Operating Se

Operating Segments Operating Segments (Tables)	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 (As Restated) Towers Fiber Other Consolidated Total Towers Fiber Other Consolidated Total Segment site rental revenues $ 868 $ 451 $ 1,319 $ 841 $ 422 $ 1,263 Segment services and other revenues 117 4 121 181 3 184 Segment revenues 985 455 1,440 1,022 425 1,447 Segment site rental cost of operations 218 150 368 218 136 354 Segment services and other cost of operations 104 2 106 133 2 135 Segment cost of operations (a)(b) 322 152 474 351 138 489 Segment site rental gross margin 650 301 951 623 286 909 Segment services and other gross margin 13 2 15 48 1 49 Segment selling, general and administrative expenses (b) 24 45 69 24 51 75 Segment operating profit (loss) 639 258 897 647 236 883 Other selling, general and administrative expenses $ 65 65 $ 56 56 Stock-based compensation expense 37 37 32 32 Depreciation, amortization and accretion 402 402 393 393 Interest expense and amortization of deferred financing costs 178 178 169 169 Other (income) expenses to reconcile to income (loss) before income taxes (c) 9 9 13 13 Income (loss) before income taxes $ 206 $ 220 Capital expenditures $ 92 $ 310 $ 12 $ 414 $ 136 $ 371 $ 11 $ 518 Total assets (at period end) $ 22,200 $ 15,616 $ 3,085 $ 40,901 $ 22,126 $ 15,215 $ 783 $ 38,124 (a) Exclusive of depreciation, amortization and accretion shown separately. (b) Segment cost of operations excludes (1) stock-based compensation of $7 million and $8 million for the three months ended June 30, 2020 and 2019, respectively, and (2) prepaid lease purchase price adjustments of $4 million and $5 million for the three months ended June 30, 2020 and 2019, respectively. Selling, general and administrative expenses exclude stock-based compensation expense of $30 million and $24 million for the three months ended June 30, 2020 and 2019, respectively. (c)	Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 (As Restated) Towers Fiber Other Consolidated Total Towers Fiber Other Consolidated Total Segment site rental revenues $ 1,735 $ 894 $ 2,629 $ 1,669 $ 836 $ 2,505 Segment services and other revenues 225 7 232 343 7 350 Segment revenues 1,960 901 2,861 2,012 843 2,855 Segment site rental cost of operations 432 302 734 429 277 706 Segment services and other cost of operations 199 4 203 252 5 257 Segment cost of operations (a)(b) 631 306 937 681 282 963 Segment site rental gross margin 1,303 592 1,895 1,240 559 1,799 Segment services and other gross margin 26 3 29 91 2 93 Segment selling, general and administrative expenses (b) 48 96 144 50 98 148 Segment operating profit (loss) 1,281 499 1,780 1,281 463 1,744 Other selling, general and administrative expenses $ 135 135 $ 112 112 Stock-based compensation expense 73 73 61 61 Depreciation, amortization and accretion 801 801 787 787 Interest expense and amortization of deferred financing costs 353 353 337 337 Other (income) expenses to reconcile to income (loss) before income taxes (c) 21 21 28 28 Income (loss) before income taxes $ 397 $ 419 Capital expenditures $ 197 $ 638 $ 26 $ 861 $ 257 $ 726 $ 15 $ 998 (a) Exclusive of depreciation, amortization and accretion shown separately. (b) Segment cost of operations excludes (1) stock-based compensation expense of $13 million and $14 million for the six months ended June 30, 2020 and 2019, respectively, and (2) prepaid lease purchase price adjustments of $9 million and $10 million for the six months ended June 30, 2020 and 2019, respectively. Selling, general and administrative expenses exclude stock-based compensation expense of $60 million and $47 million for the six months ended June 30, 2020 and 2019, respectively. (c)

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Jun. 30, 2020
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosure of Cash Flow Information and Non-cash Investing and Financing Activities	The following table is a summary of the Company's supplemental cash flow information: Six Months Ended June 30, 2020 2019 Supplemental disclosure of cash flow information: Cash payments related to operating lease liabilities (a) $ 268 $ 271 Interest paid 337 318 Income taxes paid 1 9 Supplemental disclosure of non-cash operating, investing and financing activities: New ROU assets obtained in exchange for operating lease liabilities 260 183 Increase (decrease) in accounts payable for purchases of property and equipment 13 18 Purchase of property and equipment under finance leases and installment purchases 14 22 (a) Excludes the Company's contingent payment pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.
Schedule of Cash, Cash Equivalents and Restricted Cash	The reconciliation of cash, cash equivalents, and restricted cash reported within various lines on the condensed consolidated balance sheet to amounts reported in the condensed consolidated statement of cash flows is shown below. June 30, 2020 December 31, 2019 Cash and cash equivalents $ 2,514 $ 196 Restricted cash, current 154 137 Restricted cash reported within other assets, net 5 5 Cash, cash equivalents and restricted cash $ 2,673 $ 338

General Business (Details)

General Business (Details)	Jun. 30, 2020
Subject to Capital Lease with TMO or AT&T [Member]
Purchase Option, Percentage of Towers	53.00%

Restatement of Previously Iss_3

Restatement of Previously Issued Condensed Consolidated Financial Statements Restated condensed consolidated balance sheet (Details) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Property and equipment, net of accumulated depreciation of $10,236 and $9,668, respectively	$ 14,963		$ 14,666	$ 14,128
Total Assets	40,901		38,457	38,124
Deferred revenues	763		657	607
Liabilities, Current	1,964		1,920	1,802
Other long-term liabilities	2,482		2,516	2,411
Liabilities	31,075		27,968	27,111
Dividends/distributions in excess of earnings	(8,044)		(7,365)	(6,787)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	9,826	$ 10,121	10,489	11,013	$ 11,267	$ 11,571
Liabilities and Equity	$ 40,901		$ 38,457	38,124
Previously Reported [Member]
Property and equipment, net of accumulated depreciation of $10,236 and $9,668, respectively				14,151
Total Assets				38,147
Deferred revenues				503
Liabilities, Current				1,698
Other long-term liabilities				2,028
Liabilities				26,624
Dividends/distributions in excess of earnings				(6,277)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				11,523
Liabilities and Equity				38,147
Restatement Adjustment [Member]
Property and equipment, net of accumulated depreciation of $10,236 and $9,668, respectively				0
Total Assets				0
Deferred revenues				104
Liabilities, Current				104
Other long-term liabilities				383
Liabilities				487
Dividends/distributions in excess of earnings				(487)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				(487)
Liabilities and Equity				0
Other Adjustment [Member]
Property and equipment, net of accumulated depreciation of $10,236 and $9,668, respectively				(23)
Total Assets				(23)
Deferred revenues				0
Liabilities, Current				0
Other long-term liabilities				0
Liabilities				0
Dividends/distributions in excess of earnings				(23)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				(23)
Liabilities and Equity				$ (23)

Restatement of Previously Iss_4

Restatement of Previously Issued Condensed Consolidated Financial Statements Restated condensed consolidated income statement (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2020		Jun. 30, 2019
Site Rental		$ 1,319	$ 1,263		$ 2,629		$ 2,505
Services and other		121	184		232		350
Net Revenues		1,440	1,447		2,861		2,855
Services and other	[1]	108	137	[2]	207		261	[2]
Costs and Expenses		1,057	1,058		2,113		2,099
Operating Income (Loss)		383	389		748		756
Income (Loss) Attributable to Parent, before Tax			220				419
Net income (loss)		200	216		386		409
Net income (loss)					386		409
Net Income (Loss) Available to Common Stockholders, Basic		172	188		329		352
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ 200	$ 216		$ 385		$ 409
Basic		$ 0.41	$ 0.45		$ 0.79		$ 0.85
Diluted		$ 0.41	$ 0.45		$ 0.79		$ 0.84
Site rental	[1]	$ 378	$ 365		$ 752		$ 726
Selling, general and administrative		164	155		339		307
Asset write-down charges		3	6		7		12
Acquisition and integration costs		2	2		7		6
Depreciation, amortization and accretion		402	393		801		787
Interest expense and amortization of deferred financing costs		178	169		353		337
Gain (Loss) on Extinguishment of Debt		0	(1)		0		(2)
Interest income		1	1		2		3
Other income (expense)		0	0		0		(1)
Benefit (provision) for income taxes		(6)	(4)		(11)		(10)
Dividends/distributions on preferred stock	[3]	(28)	(28)		(57)		(57)
Foreign currency translation adjustments		0	0		(1)		0
Other Comprehensive Income (Loss), Net of Tax		$ 0			$ (1)	[4]	0
Previously Reported [Member]
Site Rental			1,238				2,457
Services and other			240				447
Net Revenues			1,478				2,904
Services and other	[2]		138				263
Costs and Expenses			1,059				2,101
Operating Income (Loss)			419				803
Income (Loss) Attributable to Parent, before Tax			250				466
Net income (loss)			246				456
Net income (loss)							456
Net Income (Loss) Available to Common Stockholders, Basic			218				399
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			$ 246				$ 456
Basic			$ 0.52				$ 0.96
Diluted			$ 0.52				$ 0.95
Restatement Adjustment [Member]
Site Rental			$ 25				$ 48
Services and other			(55)				(95)
Net Revenues			(30)				(47)
Services and other	[2]		0				0
Costs and Expenses			0				0
Operating Income (Loss)			(30)				(47)
Income (Loss) Attributable to Parent, before Tax			(30)				(47)
Net income (loss)			(30)				(47)
Net income (loss)			(30)				(47)
Net Income (Loss) Available to Common Stockholders, Basic			(30)				(47)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			$ (30)				$ (47)
Basic			$ (0.07)				$ (0.11)
Diluted			$ (0.07)				$ (0.11)
Other Adjustment [Member]
Services and other			$ (1)				$ (2)
Net Revenues			(1)				(2)
Services and other	[2]		(1)				(2)
Costs and Expenses			(1)				(2)
Net income (loss)			$ 0				$ 0
[1]	Exclusive of depreciation, amortization and accretion shown separately.
[2]	Exclusive of depreciation, amortization and accretion shown separately.
[3]	See note 8 for information regarding common and preferred stock dividends declared per share.
[4]	See the condensed consolidated statement of operations and other comprehensive income (loss) for the components of other comprehensive income (loss).

Restatement of Previously Iss_5

Restatement of Previously Issued Condensed Consolidated Financial Statements Restated condensed consolidated cash flows (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net income (loss)		$ 386	$ 409
Increase (decrease) in other liabilities		55	77
Net Cash Provided by (Used in) Operating Activities		1,409	1,227
Net Cash Provided by (Used in) Continuing Operations			16
Cash, cash equivalents and restricted cash at beginning of period		338	413
Cash, cash equivalents and restricted cash at end of period	$ 429	$ 2,673	429
Previously Reported [Member]
Net income (loss)			456
Increase (decrease) in other liabilities			30
Net Cash Provided by (Used in) Operating Activities			1,227
Net Cash Provided by (Used in) Continuing Operations			16
Cash, cash equivalents and restricted cash at beginning of period			413
Cash, cash equivalents and restricted cash at end of period	429		429
Restatement Adjustment [Member]
Net income (loss)	(30)		(47)
Increase (decrease) in other liabilities			47
Net Cash Provided by (Used in) Operating Activities			0
Net Cash Provided by (Used in) Continuing Operations			0
Cash, cash equivalents and restricted cash at beginning of period			0
Cash, cash equivalents and restricted cash at end of period	0		0
Other Adjustment [Member]
Net income (loss)	0		0
Increase (decrease) in other liabilities			0
Net Cash Provided by (Used in) Operating Activities			0
Net Cash Provided by (Used in) Continuing Operations			0
Cash, cash equivalents and restricted cash at beginning of period			0
Cash, cash equivalents and restricted cash at end of period	$ 0		$ 0

Revenues (Details)

Revenues (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
		Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Revenue Recognition Non-cancelable Lease Term for Wireless Tenants		five to 15 years
Revenue Recognition for Fiber Solutions Tenants		three to 20 years
Deferred site rental receivables		$ 1,428	$ 1,428		$ 1,424
Revenue, Performance Obligation, Description of Payment Terms		45 to 60 days
Revenue, Remaining Performance Obligation, Amount		$ 3,000	3,000		$ 2,900
Revenue Recognized on Deferred Revenues			300	$ 265
Contracted Amounts Receivable from Customers, remaining three months	[1]	2,228	2,228
Contracted Amounts Receivable from Customers, in Two Years	[1]	4,157	4,157
Contracted Amounts Receivable from Customers, in Three Years	[1]	3,921	3,921
Contracted Amounts Receivable from Customers, in Four Years	[1]	3,280	3,280
Contracted Amounts Receivable from Customers, in Five Years	[1]	2,559	2,559
Contracted Amounts Receivable from Customers, Thereafter	[1]	7,480	7,480
Contracted Amounts Receivable from Customers, Total	[1]	23,625	23,625
Deferred Site Rental Receivables [Domain]
Deferred site rental receivables		1,400	1,400
Other Current Assets [Member]
Deferred site rental receivables		$ 134	$ 134
[1]	Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

Debt and Other Obligations (Ind

Debt and Other Obligations (Indebtedness) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020		Jun. 30, 2020		Dec. 31, 2019
Debt Instrument [Line Items]
Debt and Finance Lease Obligations		$ 21,113	[1]	$ 21,113	[1]	$ 18,121
Less: current maturities and short-term debt and other current obligations		99		99		100
Non-current portion of long-term debt and other long-term obligations		21,014		21,014		18,021
2016 Revolver [Member]
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount		5,000		5,000
2015 Tower Revenue Notes 3.222% due 2042 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		300		300
2015 Tower Revenue Notes 3.663% due 2045 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		700		700
2018 Tower Revenue Notes 3.720% due 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		250		250
2018 Tower Revenue Notes 4.241% due 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750		750
Fixed Rate Securitized Debt July 2018 Tower Revenue Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)		5.00%
High Yield Bonds [Member] | April 2020 Senior Notes [Domain] [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,250		$ 1,250
High Yield Bonds [Member] | 4.875% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.875%		4.875%
High Yield Bonds [Member] | Senior Unsecured 2016 Notes 3.40% [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 850		$ 850
Debt Instrument, Interest Rate, Stated Percentage		3.40%		3.40%
High Yield Bonds [Member] | 2.250% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		2.25%		2.25%
High Yield Bonds [Member] | June 2020 Senior Unsecured 1.350% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500		$ 500
Debt Instrument, Interest Rate, Stated Percentage		1.35%		1.35%
High Yield Bonds [Member] | April 2020 Senior Unsecured 3.300% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750		$ 750
Debt Instrument, Interest Rate, Stated Percentage		3.30%		3.30%
High Yield Bonds [Member] | June 2020 Senior Unsecured 2.250% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,100		$ 1,100
Debt Instrument, Interest Rate, Stated Percentage		2.25%		2.25%
High Yield Bonds [Member] | April 2020 Senior Unsecured 4.150% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500		$ 500
Debt Instrument, Interest Rate, Stated Percentage		4.15%		4.15%
High Yield Bonds [Member] | June 2020 Senior Unsecured 3.250% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 900		$ 900
Debt Instrument, Interest Rate, Stated Percentage		3.25%		3.25%
High Yield Bonds [Member] | June 2020 Senior Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 2,500		$ 2,500
Finance Lease Obligations and Other [Member] | Securitized Debt [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations	[2]	$ 225		$ 225		227
High Yield Bonds [Member] | 5.250% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	5.30%		5.30%
Debt and Finance Lease Obligations		$ 1,644		$ 1,644		1,644
High Yield Bonds [Member] | 4.875% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.90%		4.90%
Debt and Finance Lease Obligations	[4]	$ 847		$ 847		846
High Yield Bonds [Member] | Senior Unsecured 2016 Notes 3.40% [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.40%		3.40%
Debt and Finance Lease Obligations	[4],[5]	$ 850		$ 850		850
High Yield Bonds [Member] | Senior Unsecured 2016 Notes 4.450% [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.50%		4.50%
Debt and Finance Lease Obligations		$ 894		$ 894		893
High Yield Bonds [Member] | Senior Unsecured 2016 Notes 3.7% [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.70%		3.70%
Debt and Finance Lease Obligations		$ 745		$ 745		744
High Yield Bonds [Member] | 2.250% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	2.30%		2.30%
Debt and Finance Lease Obligations	[4]	$ 699		$ 699		698
High Yield Bonds [Member] | 4.000% Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.00%		4.00%
Debt and Finance Lease Obligations		$ 495		$ 495		495
High Yield Bonds [Member] | 4.750% Senior Unsecured Notes [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.80%		4.80%
Debt and Finance Lease Obligations		$ 344		$ 344		344
High Yield Bonds [Member] | August 2017 Senior Unsecured 3.200% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.20%		3.20%
Debt and Finance Lease Obligations		$ 745		$ 745		744
High Yield Bonds [Member] | June 2020 Senior Unsecured 1.350% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	1.40%		1.40%
Debt and Finance Lease Obligations	[4]	$ 494		$ 494		0
High Yield Bonds [Member] | August 2017 Senior Unsecured 3.650% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.70%		3.70%
Debt and Finance Lease Obligations		$ 993		$ 993		993
High Yield Bonds [Member] | 3.150% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.20%		3.20%
Debt and Finance Lease Obligations		$ 745		$ 745		744
High Yield Bonds [Member] | 3.800% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.80%		3.80%
Debt and Finance Lease Obligations		$ 990		$ 990		990
High Yield Bonds [Member] | February 2019 Senior Unsecured 4.300% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.30%		4.30%
Debt and Finance Lease Obligations		$ 592		$ 592		592
High Yield Bonds [Member] | February 2019 Senior Unsecured 5.200% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	5.20%		5.20%
Debt and Finance Lease Obligations		$ 395		$ 395		395
High Yield Bonds [Member] | August 2019 Senior Unsecured 3.100% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.10%		3.10%
Debt and Finance Lease Obligations		$ 544		$ 544		543
High Yield Bonds [Member] | August 2019 Senior Unsecured 4.000% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.00%		4.00%
Debt and Finance Lease Obligations		$ 345		$ 345		345
High Yield Bonds [Member] | April 2020 Senior Unsecured 3.300% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.30%		3.30%
Debt and Finance Lease Obligations	[6]	$ 736		$ 736		0
High Yield Bonds [Member] | June 2020 Senior Unsecured 2.250% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	2.30%		2.30%
Debt and Finance Lease Obligations	[4]	$ 1,087		$ 1,087		0
High Yield Bonds [Member] | April 2020 Senior Unsecured 4.150% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.20%		4.20%
Debt and Finance Lease Obligations	[6]	$ 489		$ 489		0
High Yield Bonds [Member] | June 2020 Senior Unsecured 3.250% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.30%		3.30%
Debt and Finance Lease Obligations	[4]	$ 889		$ 889		0
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations		17,843		17,843		14,850
Securitized Debt [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations		$ 3,270		$ 3,270		3,271
Securitized Debt [Member] | 2015 Tower Revenue Notes 3.222% due 2042 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.20%		3.20%
Debt and Finance Lease Obligations	[7]	$ 299		$ 299		298
Securitized Debt [Member] | 2015 Tower Revenue Notes 3.663% due 2045 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.70%		3.70%
Debt and Finance Lease Obligations	[7]	$ 695		$ 695		694
Securitized Debt [Member] | 2018 Tower Revenue Notes 3.720% due 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.70%		3.70%
Debt and Finance Lease Obligations	[7]	$ 248		$ 248		248
Securitized Debt [Member] | 2018 Tower Revenue Notes 4.241% due 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.20%		4.20%
Debt and Finance Lease Obligations	[7]	$ 743		$ 743		742
Securitized Debt [Member] | 3.849% Secured Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	3.90%		3.90%
Debt and Finance Lease Obligations		$ 996		$ 996		995
Securitized Debt [Member] | Fixed Rate Debt 2009 Securitized Notes A-2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	9.00%		9.00%
Debt and Finance Lease Obligations		$ 64		$ 64		67
Bank Debt [Member] | 2016 Revolver [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations		$ 0	[8]	$ 0	[8]	525
Bank Debt [Member] | 2016 Term Loan A [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3],[9]	1.30%		1.30%
Debt and Finance Lease Obligations		$ 2,281		$ 2,281		2,310
Commercial Paper [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations	[10]	0		0		$ 155
Commercial Paper - Maximum Issued		$ 1,000		$ 1,000
Debt Instrument, Maturity Date, Description				397 days
Maximum [Member] | 2016 Revolver [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.75%		0.75%
Maximum [Member] | Finance Lease Obligations and Other [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		10.00%		10.00%
Maximum [Member] | 2016 Revolver [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.35%
Maximum [Member] | Finance Lease Obligations and Other [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Date Range		30 years
Minimum [Member] | 2016 Revolver [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.00%		0.00%
Minimum [Member] | 2016 Revolver [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.125%
Minimum [Member] | Finance Lease Obligations and Other [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Date Range		one year
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | 2016 Revolver [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.75%		1.75%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | 2016 Revolver [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.875%		0.875%
[1]	Inclusive of the final maturities of the previously outstanding 3.400% Senior Notes, 2.250% Senior Notes and 4.875% Senior Notes, which were redeemed in July 2020. See note 13 for further discussion regarding the July redemption of previously outstanding debt.
[2]	The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates ranging up to 10% and mature in periods ranging from less than one year to approximately 30 years .
[3]	See the 2019 Form 10-K, including note 9 , for additional information regarding the maturity and principal amortization provisions and interest rates relating to the Company's indebtedness.
[4]	In June 2020, the Company issued $2.5 billion aggregate principal amount of senior unsecured notes ("June 2020 Senior Notes"), which consisted of (1) $500 million aggregate principal amount of 1.350% senior unsecured notes due July 2025, (2) $1.1 billion aggregate principal amount of 2.250% senior unsecured notes due January 2031 and (3) $900 million aggregate principal amount of 3.250% senior unsecured notes due January 2051. In July 2020, the Company used the net proceeds of the June 2020 Senior Notes offering, together with available cash, to redeem all of the previously outstanding 3.400% Senior Notes, 2.250% Senior Notes and 4.875% Senior Notes. See note 13 for further discussion regarding the use of proceeds.
[5]	While the 3.400% Senior Notes have a final maturity date within one year, the Company classified such notes as long-term based on its ability and intent to refinance the notes on a long-term basis.
[6]	In April 2020, the Company issued $1.25 billion aggregate principal amount of senior unsecured notes ("April 2020 Senior Notes"), which consisted of (1) $750 million aggregate principal amount of 3.300% senior unsecured notes due July 2030 and (2) $500 million aggregate principal amount of 4.150% senior unsecured notes due July 2050. The company used the net proceeds of the April 2020 Senior Notes offering to repay outstanding indebtedness under the 2016 Revolver.
[7]	If the respective series of Tower Revenue Notes are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of June 30, 2020, the Tower Revenue Notes have principal amounts of $300 million , $250 million , $700 million and $750 million , with anticipated repayment dates in 2022, 2023, 2025 and 2028, respectively.
[8]	As of June 30, 2020 , the undrawn availability under the 2016 Revolver was $5.0 billion .
[9]	Both the 2016 Revolver and 2016 Term Loan A bear interest, at our option, at either (1) LIBOR plus a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.125% to 0.350% , based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver.
[10]	Notes under the CP Program may be issued, repaid and re-issued from time to time, with an aggregate principal amount of Commercial Paper Notes outstanding under the CP Program at any time not to exceed $1.0 billion . The net proceeds of the Commercial Paper Notes are expected to be used for general corporate purposes. The maturities of the 2019 Commercial Paper Notes, when outstanding, may vary but may not exceed 397 days from the date of issue. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. As of June 30, 2020 , there were no outstanding Commercial Paper Notes. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding commercial paper issuances generally have short-term maturities, the Company classifies the outstanding issuances, when applicable, as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis.

Debt and Other Obligations (Com

Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Debt and Other Obligations [Abstract]
Interest Expense, Debt, Excluding Amortization	$ 176	$ 169	$ 350	$ 336
Amortization of deferred financing costs and adjustments on long-term debt	6	5	11	10
Other, net of capitalized interest	(4)	(5)	(8)	(9)
Interest expense and amortization of deferred financing costs	$ 178	$ 169	$ 353	$ 337

Debt and Other Obligations Cont

Debt and Other Obligations Contractual Maturities (Details) - USD ($) $ in Millions		Jun. 30, 2020		Dec. 31, 2019
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year	[1]	$ 53
Long-term Debt, Maturities, Repayments of Principal in Year Two	[1],[2]	1,677
Long-term Debt, Maturities, Repayments of Principal in Year Three	[1]	1,001
Long-term Debt, Maturities, Repayments of Principal in Year Four	[1]	3,605
Long-term Debt, Maturities, Repayments of Principal in Year Five	[1]	2,648
Long-term Debt, Maturities, Repayments of Principal after Year Five	[1]	12,287
Total Cash Obligations	[1]	21,271
Unamortized Adjustments, Net	[1]	(158)
Debt and Finance Lease Obligations		$ 21,113	[1]	$ 18,121
Senior Unsecured 2016 Notes 3.40% [Member] | High Yield Bonds [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.40%
Debt Instrument, Face Amount		$ 850
2.250% Senior Notes [Member] | High Yield Bonds [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		2.25%
4.875% Senior Notes [Member] | High Yield Bonds [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.875%
[1]	Inclusive of the final maturities of the previously outstanding 3.400% Senior Notes, 2.250% Senior Notes and 4.875% Senior Notes, which were redeemed in July 2020. See note 13 for further discussion regarding the July redemption of previously outstanding debt.
[2]	Inclusive of $850 million of 3.400% Senior Notes due February 2021. While the 3.400% Senior Notes have a final maturity date within one year, the Company classified such notes as long-term based on its ability and intent to refinance the notes on a long-term basis.

Fair Value Disclosures (Estimat

Fair Value Disclosures (Estimated Fair Values and Carrying Amounts of Assets and Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2020		Dec. 31, 2019
Fair Value Disclosures [Abstract]
Cash and cash equivalents, at carrying value	$ 2,514		$ 196
Cash and cash equivalents, fair value	2,514		196
Restricted Cash	159		142
Restricted Cash Fair Value Disclosure	159		142
Long-term debt and other obligations, carrying amount	21,113	[1]	18,121
Long-term debt and other obligations, fair value	$ 23,018		$ 19,170
[1]	Inclusive of the final maturities of the previously outstanding 3.400% Senior Notes, 2.250% Senior Notes and 4.875% Senior Notes, which were redeemed in July 2020. See note 13 for further discussion regarding the July redemption of previously outstanding debt.

Per Share Information (Reconcil

Per Share Information (Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share Computations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income (loss)		$ 200	$ 216	$ 386	$ 409
Dividends/distributions on preferred stock	[1]	(28)	(28)	(57)	(57)
Net income (loss) attributable to CCIC common stockholders for basic and diluted computations		$ 172	$ 188	$ 329	$ 352
Basic weighted-average number of common stock outstanding		417	416	416	415
Effect of assumed dilution from potential issuance of common shares relating to restricted stock units		2	2	2	2
Diluted weighted-average number of common shares outstanding		419	418	418	417
Basic		$ 0.41	$ 0.45	$ 0.79	$ 0.85
Diluted		0.41	0.45	0.79	0.84
Dividends/distributions declared per share of common stock (in dollars per share)		1.20	1.125	2.40	2.250
Dividends/distributions declared per share of preferred stock		$ 17.1875	$ 17.1875	$ 34.3750	$ 34.3750
[1]	See note 8 for information regarding common and preferred stock dividends declared per share.

Per Share Information (Narrativ

Per Share Information (Narrative) (Details) shares in Millions	6 Months Ended
	Jun. 30, 2020shares
Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross	1
Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from dilutive common shares calculation	15

Commitments and Contingencies C

Commitments and Contingencies Commitment and Contingencies (Details)	Jun. 30, 2020
Subject to Capital Lease with TMO or AT&T [Member]
Other Commitments [Line Items]
Purchase Option, Percentage of Towers	53.00%

Equity (Details)

Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Dividends Payable [Line Items]
Preferred Stock, Dividends, Per Share, Cash Paid			$ 17.1875	$ 17.1875	$ 17.1875
Common Stock, Dividends, Per Share, Cash Paid	[1]		$ 1.20		$ 1.20
Dividends, Common Stock, Cash	[1]		$ 504		$ 504
Dividends, Preferred Stock, Cash			$ 28	$ 28	$ 28
Common stock repurchased during period, shares		0.4
Purchases of Common Stock						$ (74)	$ (43)
Availability Under ATM		$ 750				$ 750
Common Stock [Member]
Dividends Payable [Line Items]
Dividends Payable, Date Declared	[1]		Feb. 20, 2020		May 14, 2020
Dividends Payable, Date of Record	[1]		Mar. 13, 2020		Jun. 12, 2020
Dividends Payable, Date to be Paid	[1]		Mar. 31, 2020		Jun. 30, 2020
Preferred Stock [Member]
Dividends Payable [Line Items]
Dividends Payable, Date Declared			Mar. 12, 2020	Dec. 9, 2019	Jun. 19, 2020
Dividends Payable, Date of Record			Apr. 15, 2020	Jan. 15, 2020	Jul. 15, 2020
Dividends Payable, Date to be Paid			May 1, 2020	Feb. 3, 2020	Aug. 3, 2020
[1]	Inclusive of dividends accrued for holders of unvested restricted stock units, which will be paid when and if the restricted stock units vest.

Operating Segments Operating _2

Operating Segments Operating Segments Table (Details) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2020USD ($)		Jun. 30, 2019USD ($)		Jun. 30, 2020USD ($)		Jun. 30, 2019USD ($)		Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Tower Count		40,000				40,000
Fiber Miles		80,000				80,000
Amortization of prepaid lease purchase price adjustments		$ 4		$ 5		$ 9		$ 10
Site Rental		1,319		1,263		2,629		2,505
Services and other		121		184		232		350
Segment Revenues		1,440		1,447		2,861		2,855
Segment site rental cost of operations	[1]	378		365		752		726
Services and other	[1]	108		137	[2]	207		261	[2]
Segment selling, general and administrative expenses		164		155		339		307
Stock-based compensation expense						75		62
Depreciation, Amortization and Accretion, Net		402		393		801		787
Interest expense and amortization of deferred financing costs		178		169		353		337
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest		206		220		397		419
Capital expenditures						(861)		(998)
Total Assets		40,901		38,124		40,901		38,124		$ 38,457
Segment cost of operations share-based compensation [Member]
Segment Reporting Information [Line Items]
Stock-based compensation expense		7		8		13		14
Towers [Member]
Segment Reporting Information [Line Items]
Site Rental		868		841		1,735		1,669
Services and other		117		181		225		343
Segment Revenues		985		1,022		1,960		2,012
Segment site rental cost of operations		218		218		432		429
Services and other		104		133		199		252
Segment cost of operations	[4]	322	[3]	351	[3]	631	[5]	681	[5]
Segment site rental gross margin		650		623		1,303		1,240
Segment services gross margin		13		48		26		91
Segment selling, general and administrative expenses		24	[3]	24	[3]	48	[5]	50	[5]
Segment Operating Profit		639		647		1,281		1,281
Capital expenditures		92		136		197
Total Assets		22,200		22,126		22,200		22,126
Fiber [Member]
Segment Reporting Information [Line Items]
Site Rental		451		422		894		836
Services and other		4		3		7		7
Segment Revenues		455		425		901		843
Segment site rental cost of operations		150		136		302		277
Services and other		2		2		4		5
Segment cost of operations	[4]	152	[3]	138	[3]	306	[5]	282	[5]
Segment site rental gross margin		301		286		592		559
Segment services gross margin		2		1		3		2
Segment selling, general and administrative expenses		45	[3]	51	[3]	96	[5]	98	[5]
Segment Operating Profit		258		236		499		463
Capital expenditures		310		371		638
Total Assets		15,616		15,215		15,616		15,215
Consolidated Total [Member]
Segment Reporting Information [Line Items]
Site Rental		1,319		1,263		2,629		2,505
Services and other		121		184		232		350
Segment Revenues		1,440		1,447		2,861		2,855
Segment site rental cost of operations		368		354		734		706
Services and other		106		135		203		257
Segment cost of operations	[4]	474	[3]	489	[3]	937	[5]	963	[5]
Segment site rental gross margin		951		909		1,895		1,799
Segment services gross margin		15		49		29		93
Segment selling, general and administrative expenses		69	[3]	75	[3]	144	[5]	148	[5]
Segment Operating Profit		897		883		1,780		1,744
Stock-based compensation expense		37		32		73		61
Depreciation, Amortization and Accretion, Net		402		393		801		787
Interest expense and amortization of deferred financing costs		178		169		353		337
Other expenses to reconcile to income (loss) from continuing operations before income taxes	[6]	9		13		21		28
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest		206		220		397		419
Capital expenditures		414		518		861		998
Total Assets		40,901		38,124		40,901		38,124
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Segment selling, general and administrative expenses		65		56		135		112
Segment Operating Profit
Stock-based compensation expense		37		32		73		61
Depreciation, Amortization and Accretion, Net		402		393		801		787
Interest expense and amortization of deferred financing costs		178		169		353		337
Other expenses to reconcile to income (loss) from continuing operations before income taxes	[6]	9		13		21		28
Capital expenditures		12		11		26		15
Total Assets		3,085		783		3,085		783
Segment G&A share-based compensation [Member]
Segment Reporting Information [Line Items]
Stock-based compensation expense		$ 30		$ 24		$ 60		$ 47
[1]	Exclusive of depreciation, amortization and accretion shown separately.
[2]	Exclusive of depreciation, amortization and accretion shown separately.
[3]	Segment cost of operations excludes (1) stock-based compensation of $7 million and $8 million for the three months ended June 30, 2020 and 2019, respectively, and (2) prepaid lease purchase price adjustments of $4 million and $5 million for the three months ended June 30, 2020 and 2019, respectively. Selling, general and administrative expenses exclude stock-based compensation expense of $30 million and $24 million for the three months ended June 30, 2020 and 2019, respectively.
[4]	Exclusive of depreciation, amortization and accretion shown separately.
[5]	Segment cost of operations excludes (1) stock-based compensation expense of $13 million and $14 million for the six months ended June 30, 2020 and 2019, respectively, and (2) prepaid lease purchase price adjustments of $9 million and $10 million for the six months ended June 30, 2020 and 2019, respectively. Selling, general and administrative expenses exclude stock-based compensation expense of $60 million and $47 million for the six months ended June 30, 2020 and 2019, respectively.
[6]	See condensed consolidated statement of operations for further information.

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
		Jun. 30, 2020	Jun. 30, 2020
Supplemental Cash Flow Information [Line Items]
Cash payments related to operating lease liabilities	[1]	$ 268	$ 271
Interest paid		337	318
Income Taxes Paid		1	9
New ROU assets obtained in exchange for operating lease liabilities		260	183
Increase (decrease) in accounts payable for purchases of property and equipment		13	18
Purchase of property and equipment under capital leases and installment purchases		$ 14	$ 22
[1]	Excludes the Company's contingent payment pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.

Supplemental Cash Flow Inform_4

Supplemental Cash Flow Information Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 2,514	$ 196
Restricted cash	154	137
Restricted Cash, Noncurrent	5	5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 2,673	$ 338	$ 429	$ 413

Subsequent Events Subsequent Ev

Subsequent Events Subsequent Events (Details) $ in Millions	Jul. 06, 2020USD ($)
June 2020 Senior Notes Issuance [Domain]
Subsequent Event [Line Items]
Gain (Loss) on Redemption of Debt Instrument	$ 95