Equity - Additional Information (Detail) $ / shares in Units, $ in Thousands		3 Months Ended						9 Months Ended
	Oct. 14, 2022 USD ($) $ / shares	Sep. 30, 2022 USD ($) shares	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2021 USD ($) shares	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2022 USD ($) agreement shares	Sep. 30, 2021 USD ($) shares	Dec. 31, 2021 USD ($) shares	Mar. 25, 2014 shares
Class of Stock [Line Items]
Shares authorized (in shares) | shares		500,000,000						500,000,000
Common stock, shares authorized (in shares) | shares		400,000,000						400,000,000		400,000,000
Preferred stock, shares authorized (in shares) | shares		100,000,000						100,000,000
Preferred stock, shares issued (in shares) | shares		0						0		0
Preferred stock, shares outstanding (in shares) | shares		0						0		0
Common stock, shares issued under dividend reinvestment program (in shares) | shares		2,000			480			5,420	1,429
Total dividends declared		$ 106,197	$ 105,812	$ 105,801	$ 97,552	$ 91,347	$ 91,349	$ 317,812	$ 280,250
Accumulated other comprehensive income		3,830						3,830		$ 8,308
Net realized and unrealized gains related to changes in fair value of derivative instruments		415,400						415,400		86,400
Cumulative unrealized currency translation adjustment on assets and liabilities denominated in foreign currencies		411,600						411,600		78,100
Subsequent Event
Class of Stock [Line Items]
Dividends paid per common stock (in dollars per share) | $ / shares	$ 0.62
Total dividends declared	$ 106,000
Joint Venture | Multifamily
Class of Stock [Line Items]
Total equity		170,000						170,000		203,500
Equity interests owned		144,500						144,500		173,000
Non-controlling interests		$ 25,500						$ 25,500		$ 30,500
Dividend Reinvestment and Direct Stock Purchase Plan
Class of Stock [Line Items]
Common shares reserved for issuance (in shares) | shares		9,984,370						9,984,370			10,000,000
ATM Agreement
Class of Stock [Line Items]
Number of equity distribution agreements | agreement								7
Aggregate sales price								$ 699,100
Number of shares sold (in shares) | shares								2,303,469	0
Shares sold								$ 70,700
Aggregate sales price remaining available		$ 480,900						$ 480,900
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares) | shares		400,000,000						400,000,000