Mortgage Notes, Term Loans, and Secured Revolving Credit Facilities - Summary of Company's Mortgage Notes, Term Loans and Secured Revolving Credit Facilities (Details) - USD ($)	9 Months Ended
Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 13,367,315,000	$ 6,885,142,000
Deferred financing costs, net	(127,494,000)	(53,546,000)
Premium on assumed debt, net	10,718,000	1,673,000
Mortgage notes, term loans, and secured revolving credit facilities, net	$ 13,250,539,000	6,833,269,000
Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.83%
Weighted Average Maturity Date	Dec. 28, 2025
One-Month LIBOR [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	2.00%
Fixed Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 9,215,691,000	4,982,326,000
Fixed Rate Loans [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.90%
Weighted Average Maturity Date	Jun. 17, 2026
Variable Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 4,151,624,000	1,902,816,000
Variable Rate Loans [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Maturity Date	Dec. 14, 2024
Variable Rate Loans [Member] \| One-Month LIBOR [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.60%
Mortgage Notes [Member] \| Fixed Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 9,019,813,000	4,782,326,000
Mortgage Notes [Member] \| Fixed Rate Loans [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.85%
Weighted Average Maturity Date	Jun. 27, 2026
Mortgage Notes [Member] \| Variable Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 1,540,166,000	675,116,000
Mortgage Notes [Member] \| Variable Rate Loans [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Maturity Date	Jul. 23, 2025
Mortgage Notes [Member] \| Variable Rate Loans [Member] \| One-Month LIBOR [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.71%
Mezzanine Loan [Member] \| Fixed Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 195,878,000	200,000,000
Mezzanine Loan [Member] \| Fixed Rate Loans [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.85%
Weighted Average Maturity Date	Apr. 05, 2025
Term Loan [Member] \| Variable Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 1,432,479,000	603,500,000
Term Loan [Member] \| Variable Rate Loans [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Maturity Date	Dec. 15, 2023
Term Loan [Member] \| Variable Rate Loans [Member] \| One-Month LIBOR [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.59%
Secured Revolving Credit Facility [Member] \| Variable Rate Loans [Member]
Debt Instrument [Line Items]
Maximum Facility Size	$ 2,132,479,000
Principal Balance Outstanding	$ 1,178,979,000	$ 624,200,000
Secured Revolving Credit Facility [Member] \| Variable Rate Loans [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Maturity Date	May 18, 2025
Secured Revolving Credit Facility [Member] \| Variable Rate Loans [Member] \| One-Month LIBOR [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.49%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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- Definition

Amount, after accumulated amortization, of debt premium.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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