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Common Shares (Narrative) (Details) - USD ($) shares in Thousands, $ in Millions	May 23, 2023	May 13, 2022	Aug. 04, 2023	Jun. 30, 2023	Dec. 31, 2022
Number of common and preferred stock authorized to issue				185,000
Common shares, authorized				175,000	175,000
Preferred shares, authorized				10,000
Common Stock, Shares, Outstanding				106,800
Preferred Stock, Shares Outstanding				0
2022 ATM program
Maximum aggregate offering price of common shares		$ 500.0
2023 ATM program
Maximum aggregate offering price of common shares	$ 500.0
2023 ATM program | Subsequent Event [Member]
Maximum aggregate offering price of remaining common shares available for sale			$ 500.0
October 2022 Repurchase Plan
Treasury stock allowed for repurchase				$ 500.0
October 2022 Repurchase Plan | Subsequent Event [Member]
Share Repurchase Program, Remaining Authorized Repurchase Amount			$ 500.0

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Maximum aggregate offering price of common shares under the at-the-market share offering program.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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