Long-term Employee Benefits - Schedule of Fair Value of Defined Benefit Pension Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 130.4	$ 143.5	$ 134.1
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	380.9	386.7	$ 356.9
Pension Plan | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	336.2	347.7
Pension Plan | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	174.8	171.6
Pension Plan | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31.0	32.6
Pension Plan | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	130.4	143.5
Pension Plan | Cash and cash equivalents | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11.1	5.8
Pension Plan | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11.1	5.8
Pension Plan | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Pension Plan | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Pension Plan | U.S. equity securities | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	29.8	38.1
Pension Plan | U.S. equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	29.6	37.9
Pension Plan | U.S. equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Pension Plan | U.S. equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.2
Pension Plan | Non-U.S. equity securities | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	39.6	48.4
Pension Plan | Non-U.S. equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	36.0	45.2
Pension Plan | Non-U.S. equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.4	0.4
Pension Plan | Non-U.S. equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.2	2.8
Pension Plan | Debt securities—government issued | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	79.6	77.9
Pension Plan | Debt securities—government issued | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	53.1	54.0
Pension Plan | Debt securities—government issued | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22.2	20.2
Pension Plan | Debt securities—government issued | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4.3	3.7
Pension Plan | Debt securities—corporate issued | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	55.3	41.5
Pension Plan | Debt securities—corporate issued | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	44.9	28.5
Pension Plan | Debt securities—corporate issued | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8.2	10.3
Pension Plan | Debt securities—corporate issued | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.2	2.7
Pension Plan | Private market securities and other | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	120.8	136.0
Pension Plan | Private market securities and other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.1	0.2
Pension Plan | Private market securities and other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	1.7
Pension Plan | Private market securities and other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	120.5	134.1
Pension Plan | Investments measured at NAV | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 44.7	$ 39.0