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Legal Proceedings and Contingent Liabilities Taxation) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Legal Proceedings and Contingent Liabilities
Tax contingency related to transfer pricing audits included in tax accrual	$ 98.0	$ 287.0
Maximum amount of possible additional losses, transfer pricing	$ 29.0	$ 251.0

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- Definition

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Amount of tax contingency relating to transfer pricing audits included in tax accrual.

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- Definition

Tax contingency transfer pricing maximum amount of additional losses above and beyond the amount provided in entity's financial statements.

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