|9 Months Ended|
Sep. 30, 2021
|Subsequent Events [Abstract]|
|Subsequent Events||12. Subsequent Events Subsequent to September 30, 2021, other than the asset sales (disclosed in Note 3) and the announced redemption of the 5.20% Cumulative Preferred Stock, Series W (disclosed in Note 9), no other subsequent events have occurred that would require recognition in the consolidated financial statements or disclosure in the accompanying notes.|
The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.
Reference 1: http://www.xbrl.org/2003/role/disclosureRef