Business, Basis of Presentation and Significant Accounting Policies (Accounting Pronouncements Adopted) (Narrative) (Details) - Accounting Standards Update 2019-12	Mar. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2021
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, immaterial effect	true