SCHEDULE I - PARENT COMPANY FINANCIAL INFORMATION (Notes to Condensed Financial Statements) (Details) - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Information Disclosure [Abstract]
Cash dividends received from subsidiary	$ 1.8	$ 2.3	$ 1.4
Aggregate statutory capital and surplus in our state regulated insurance subsidiaries	8.0	7.6
Aggregate minimum regulatory requirements of statutory capital and surplus	5.9	5.2
Dividends that may be paid to the parent company without prior approval by state regulatory authorities in 2014	1.0
Dividends that were paid to the parent company without prior approval by state regulatory authorities	$ 1.8	$ 2.3	$ 1.4