Accounting Changes	3 Months Ended
	Mar. 31, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Accounting Changes	Accounting changes Accounting pronouncements that became effective during the period covered by the Interim Consolidated Financial Statements did not have a material impact on the Company's Interim Consolidated Balance Sheets, Interim Consolidated Statements of Income, or Interim Consolidated Statements of Cash Flows. Likewise, accounting pronouncements issued, but not effective until after March 31, 2021, are not expected to have a material impact on the Company's Consolidated Balance Sheets, Consolidated Statements of Income, or Consolidated Statements of Cash Flows.