Consolidated and Combined Statements of Changes in Equity (Parenthetical) - $ / shares	6 Months Ended	12 Months Ended
	Jul. 02, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Special dividend
Dividends (in dollars per share)	$ 17.5
Special dividend | Class A
Dividends (in dollars per share)				$ 17.50
Cash dividend | Class A
Dividends (in dollars per share)		$ 0.72	$ 0.72	$ 0.35