Income Taxes (Remaining Tax Years Subject to Examination) (Details)	12 Months Ended
	Dec. 31, 2020
Minimum | United States
Income Tax Examination
Income Tax Examination, Year under Examination	2016
Minimum | United Kingdom
Income Tax Examination
Income Tax Examination, Year under Examination	2012
Minimum | Brazil
Income Tax Examination
Income Tax Examination, Year under Examination	2014
Minimum | Australia
Income Tax Examination
Income Tax Examination, Year under Examination	2014
Minimum | China
Income Tax Examination
Income Tax Examination, Year under Examination	2009
Maximum | United States
Income Tax Examination
Income Tax Examination, Year under Examination	2019
Maximum | United Kingdom
Income Tax Examination
Income Tax Examination, Year under Examination	2019
Maximum | Brazil
Income Tax Examination
Income Tax Examination, Year under Examination	2019
Maximum | Australia
Income Tax Examination
Income Tax Examination, Year under Examination	2019
Maximum | China
Income Tax Examination
Income Tax Examination, Year under Examination	2019