Financing Arrangements and Derivative Financial Instruments - Long Term Debt and Finance Leases, Net of Unamortized Discounts, and Interest Rates (Parenthetical) (Details)	Mar. 31, 2021	Dec. 31, 2020
5.125% due 2023 | Senior Notes
Long-term Debt and Lease Obligation [Abstract]
Interest rate, stated percentage	5.125%	5.125%
3.75% Euro Notes due 2023 | Euro Notes
Long-term Debt and Lease Obligation [Abstract]
Interest rate, stated percentage	3.75%	3.75%
9.5% due 2025 | Senior Notes
Long-term Debt and Lease Obligation [Abstract]
Interest rate, stated percentage	9.50%	9.50%
5% due 2026 | Senior Notes
Long-term Debt and Lease Obligation [Abstract]
Interest rate, stated percentage	5.00%	5.00%
4.875% due 2027 | Senior Notes
Long-term Debt and Lease Obligation [Abstract]
Interest rate, stated percentage	4.875%	4.875%
7% due 2028 | Senior Notes
Long-term Debt and Lease Obligation [Abstract]
Interest rate, stated percentage	7.00%	7.00%