Earnings Per Share - Narrative (Details) - $ / shares		3 Months Ended
	Dec. 15, 2017	Mar. 31, 2018
Mandatory Convertible Preferred Stock Series A
Class of Stock [Line Items]
Preferred shares authorized (in shares)		100,000,000
Preferred stock rate (percent)		5.50%
Preferred stock, par value (in USD per share)		$ 0.00001
Preferred shares outstanding (in shares)		0
Stock converted (in shares)	20,000,000
Common Stock
Class of Stock [Line Items]
Stock issued upon conversion (in shares)	32,000,000
Stock conversion ratio (in shares)	1.6119