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Accumulated Other Comprehensive Income
12 Months Ended
Dec. 31, 2021
Accumulated Other Comprehensive Income [Abstract]  
Accumulated Other Comprehensive Income (Loss) Note ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ("AOCI")The following table sets forth the changes in AOCI by component during the years ended December 31, 2021, 2020 and 2019:
(in millions)Foreign Currency Translation Gain (Loss)Net Actuarial Gain and Prior Service CostAmortization of Gain on Interest Rate SwapNet Gain (Loss) on Marketable Securities Held in TrustTotal
Balance at December 31, 2018$(1,547.4)$(105.3)$0.4 $(4.8)(1,657.1)
Other comprehensive income (loss)74.1 (26.2)2.2 14.0 64.1 
Tax (expense) or benefit(4.7)1.9 (0.5)(3.1)(6.4)
Other comprehensive income (loss), net of tax69.4 (24.3)1.7 10.9 57.7 
Addback: loss attributable to noncontrolling interest1.2 — — — 1.2 
Balance at December 31, 2019$(1,476.8)$(129.6)$2.1 $6.1 $(1,598.2)
Other comprehensive income (loss)(246.1)12.2 2.0 16.6 (215.3)
Tax (expense) or benefit(3.4)7.7 (0.4)(3.8)0.1 
Other comprehensive income (loss), net of tax(249.5)19.9 1.6 12.8 (215.2)
Addback: loss attributable to noncontrolling interest7.2 — — — 7.2 
Balance at December 31, 2020$(1,719.1)$(109.7)$3.7 $18.9 $(1,806.2)
Other comprehensive income (loss)(117.0)56.5 2.0 (22.7)(81.2)
Tax (expense) or benefit8.8 (19.6)(0.5)5.1 (6.2)
Other comprehensive income (loss), net of tax(108.2)36.9 1.5 (17.6)(87.4)
Addback: loss attributable to noncontrolling interest1.8 — — — 1.8 
Balance at December 31, 2021$(1,825.5)$(72.8)$5.2 $1.3 $(1,891.8)