Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets:
Deferred compensation assets	$ 12.8	$ 11.3
Foreign currency contracts	3.0	7.7
Total assets at fair value	16.1	19.1
Liabilities:
Contingent consideration	3.6	3.3
Deferred compensation liabilities	14.5	12.8
Total liabilities at fair value	33.4	17.8
Commodity call options
Assets:
Commodity call options	0.3	0.1
Cross-currency swap
Liabilities:
Foreign currency contracts and swaps	5.6	1.4
Foreign currency hedge contracts
Liabilities:
Foreign currency contracts and swaps	9.7	0.3
Level 1
Assets:
Deferred compensation assets	12.8	11.3
Foreign currency contracts	0.0	0.0
Total assets at fair value	12.8	11.3
Liabilities:
Contingent consideration	0.0	0.0
Deferred compensation liabilities	14.5	12.8
Total liabilities at fair value	14.5	12.8
Level 1 | Commodity call options
Assets:
Commodity call options	0.0	0.0
Level 1 | Cross-currency swap
Liabilities:
Foreign currency contracts and swaps	0.0	0.0
Level 1 | Foreign currency hedge contracts
Liabilities:
Foreign currency contracts and swaps	0.0	0.0
Level 2
Assets:
Deferred compensation assets	0.0	0.0
Foreign currency contracts	3.0	7.7
Total assets at fair value	3.3	7.8
Liabilities:
Contingent consideration	0.0	0.0
Deferred compensation liabilities	0.0	0.0
Total liabilities at fair value	15.3	1.7
Level 2 | Commodity call options
Assets:
Commodity call options	0.3	0.1
Level 2 | Cross-currency swap
Liabilities:
Foreign currency contracts and swaps	5.6	1.4
Level 2 | Foreign currency hedge contracts
Liabilities:
Foreign currency contracts and swaps	9.7	0.3
Level 3
Assets:
Deferred compensation assets	0.0	0.0
Foreign currency contracts	0.0	0.0
Total assets at fair value	0.0	0.0
Liabilities:
Contingent consideration	3.6	3.3
Deferred compensation liabilities	0.0	0.0
Total liabilities at fair value	3.6	3.3
Level 3 | Commodity call options
Assets:
Commodity call options	0.0	0.0
Level 3 | Cross-currency swap
Liabilities:
Foreign currency contracts and swaps	0.0	0.0
Level 3 | Foreign currency hedge contracts
Liabilities:
Foreign currency contracts and swaps	$ 0.0	$ 0.0