Shareholders' Equity - Narrative (Details) - USD ($)						12 Months Ended
	Sep. 28, 2020	Jun. 17, 2020	Jun. 02, 2020	Jun. 28, 2019	Dec. 19, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsidiary or Equity Method Investee
Total number of common and preferred shares authorized (in shares)						750,000,000
Common stock, shares authorized (in shares)						700,000,000	700,000,000
Common stock, par value (in dollars per share)						$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)						50,000,000	50,000,000
Preferred stock, par value (in dollars per share)						$ 0.01	$ 0.01
Issuance of common stock, net						$ 1,539,533,000	$ 1,164,545,000
Proceeds from offering of common stock						$ 1,539,748,000	$ 1,164,307,000	$ 2,001,493,000
Additional shares subject to forward sale (in shares)						68,000,000	0
ATM Stock Offering Program
Subsidiary or Equity Method Investee
Proceeds from offering of common stock						$ 200,000,000.0	$ 128,300,000
Stock allowed to be issued during period, value					$ 750,000,000.0
Shares issued (in shares)						7,500,000	6,107,633
Forward Sales Agreement
Subsidiary or Equity Method Investee
Forward contract indexed to issuer's equity (in shares)		29,900,000		50,000,000
Stock sold pursuant to the exercise in full of underwriters' option to purchase additional common stock (in shares)		3,900,000		15,000,000
Share price (in dollars per share)		$ 22.15		$ 21.50
Issuance of common stock, net		$ 662,300,000
Number of shares issued in transaction (in shares)	3,000,000
Proceeds from offering of common stock	$ 63,000,000.0		$ 1,300,000,000
Sale of stock (in dollar per share)	$ 21.04
Offering forward price (in dollars per share)		$ 21.37	$ 19.64
Forward agreement on the proceeds from issuance of common stock				$ 1,000,000,000.0
Offering stock during period, value				$ 1,100,000,000
Additional shares subject to forward sale (in shares)			65,000,000	65,000,000
Forward Sales Agreement | Plan
Subsidiary or Equity Method Investee
Number of shares issued in transaction (in shares)						5,400,000
Offering forward price (in dollars per share)						$ 20.34
Shares issued, forward sale (in shares)		26,900,000
Forward agreement on the proceeds from issuance of common stock						$ 547,200,000
Cash outflow for shares						$ 138,700,000