Consolidated Statements of Shareholders' Deficit (Parenthetical) - $ / shares	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share (in dollars per share)	$ 0	$ 0.225	$ 0.215	$ 0.215	$ 0.225	$ 0.43