CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Revenue	$ 2,737.1	$ 2,957.1	$ 3,122.3
Cost of revenue	(2,203.7)	(2,328.3)	(2,265.4)
Gross profit	533.4	628.8	856.9
Selling, general and administrative expenses	(707.6)	(767.2)	(855.3)
Impairment of goodwill	(714.9)	(708.8)	(534.5)
Impairment of assets, net	(20.0)	(52.2)	(146.1)
Loss from operations	(909.1)	(899.4)	(679.0)
Other income (expense):
Interest expense	(98.0)	(221.6)	(208.5)
Gain (loss) on investments, net	0.1	0.3	(0.2)
Gain on debt extinguishment, net of debt modification costs	147.2	271.3	0.0
Other expense, net	(21.7)	(5.0)	(10.0)
Total other income (expense)	27.6	45.0	(218.7)
Loss before income taxes	(881.5)	(854.4)	(897.7)
Benefit for income taxes	23.3	16.6	92.9
Net loss	(858.2)	(837.8)	(804.8)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	(8.2)	8.0	(27.2)
Unrealized gain on derivative contracts	15.1	10.8	86.9
Amount reclassified from accumulated other comprehensive income (loss) to earnings	(43.1)	(29.9)	4.8
Other comprehensive income (loss)	(36.2)	(11.1)	64.5
Comprehensive loss	$ (894.4)	$ (848.9)	$ (740.3)
Net loss per share:
Basic (in dollars per share)	$ (3.82)	$ (3.89)	$ (3.81)
Diluted (in dollars per share)	$ (3.82)	$ (3.89)	$ (3.81)
Weighted average number of shares outstanding:
Basic (in shares)	224.8	215.3	211.2
Diluted (in shares)	224.8	215.3	211.2