Long-term Debt and Finance Leases -Senior Notes Redemption Period (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Aug. 24, 2021	Aug. 23, 2021	Dec. 02, 2020	May 24, 2019	Dec. 07, 2017	Aug. 02, 2016
6.625% Senior Notes due 2027
Debt Instrument [Line Items]
Average Early Redemption Percentage	103.313%
Interest rate, stated percentage	6.625%		6.625%
Senior Notes, due 2032
Debt Instrument [Line Items]
Average Early Redemption Percentage	40.00%
Interest rate, stated percentage	3.875%			3.875%
Senior Notes, due 2032 | Redemption Period Prior to August 15 2024
Debt Instrument [Line Items]
Average Early Redemption Percentage	103.875%
Outstanding principal after redemption, percentage (at least)	50.00%
Senior Notes, due 2032 | Redemption Period Prior to February 15 2027
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.00%
Premium percentage of principal amount of note discount factor (as percent)	1.00%
Senior Notes, due 2032 | 2027
Debt Instrument [Line Items]
Redemption Percentage (If Sustainability Performance Target has been satisfied and confirmed by External Verifier)	101.938%
Redemption Percentage (If Sustainability Performance Target has not been satisfied and/or confirmed by External Verifier)	102.188%
Senior Notes, due 2032 | 2028
Debt Instrument [Line Items]
Redemption Percentage (If Sustainability Performance Target has been satisfied and confirmed by External Verifier)	101.292%
Redemption Percentage (If Sustainability Performance Target has not been satisfied and/or confirmed by External Verifier)	101.458%
Senior Notes, due 2032 | 2029
Debt Instrument [Line Items]
Redemption Percentage (If Sustainability Performance Target has been satisfied and confirmed by External Verifier)	100.646%
Redemption Percentage (If Sustainability Performance Target has not been satisfied and/or confirmed by External Verifier)	100.729%
Senior Notes, due 2032 | 2030 and thereafter
Debt Instrument [Line Items]
Redemption Percentage (If Sustainability Performance Target has been satisfied and confirmed by External Verifier)	100.00%
Redemption Percentage (If Sustainability Performance Target has not been satisfied and/or confirmed by External Verifier)	100.00%
Recourse Debt | 6.625% Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate, stated percentage	6.625%							6.625%
Recourse Debt | 6.625% Senior Notes due 2027 | July 15, 2021 to July 14, 2022
Debt Instrument [Line Items]
Average Early Redemption Percentage	103.313%
Recourse Debt | 6.625% Senior Notes due 2027 | July 15, 2022 to July 14, 2023
Debt Instrument [Line Items]
Average Early Redemption Percentage	102.208%
Recourse Debt | 6.625% Senior Notes due 2027 | July 15, 2023 to July 14, 2024
Debt Instrument [Line Items]
Average Early Redemption Percentage	101.104%
Recourse Debt | 6.625% Senior Notes due 2027 | July 15, 2024 and thereafter
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.00%
Recourse Debt | 5.750% Senior Notes due 2028
Debt Instrument [Line Items]
Interest rate, stated percentage	5.75%						5.75%
Recourse Debt | 5.750% Senior Notes due 2028 | Redemption Period Prior to January 15, 2023
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.00%
Present value of note (as percentage)	1.02875
Recourse Debt | 5.750% Senior Notes due 2028 | January 15, 2023 to January 14, 2024
Debt Instrument [Line Items]
Average Early Redemption Percentage	102.875%
Recourse Debt | 5.750% Senior Notes due 2028 | January 15, 2024 to January 14, 2025
Debt Instrument [Line Items]
Average Early Redemption Percentage	101.917%
Recourse Debt | 5.750% Senior Notes due 2028 | January 15, 2025 to January 14, 2026
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.958%
Recourse Debt | 5.750% Senior Notes due 2028 | January 15, 2026 and thereafter
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.00%
Recourse Debt | 5.750% Senior Notes due 2028 | Treasury Rate
Debt Instrument [Line Items]
Premium percentage of principal amount of note discount factor (as percent)	1.00%
Treasury rate redemption (as percentage)	50.00%
Recourse Debt | 5.250% Senior Notes due 2029
Debt Instrument [Line Items]
Average Early Redemption Percentage	40.00%
Interest rate, stated percentage	5.25%					5.25%
Recourse Debt | 5.250% Senior Notes due 2029 | Redemption Period Prior to June 15, 2022
Debt Instrument [Line Items]
Average Early Redemption Percentage	105.25%
Outstanding principal after redemption, percentage (at least)	50.00%
Recourse Debt | 5.250% Senior Notes due 2029 | Redemption Period Prior to June 15, 2024
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.00%
Premium percentage of principal amount of note discount factor (as percent)	1.00%
Present value of note (as percentage)	1.02625
Recourse Debt | 5.250% Senior Notes due 2029 | June 15, 2024 to June 14, 2025
Debt Instrument [Line Items]
Average Early Redemption Percentage	102.625%
Recourse Debt | 5.250% Senior Notes due 2029 | June 15, 2025 to June 14, 2026
Debt Instrument [Line Items]
Average Early Redemption Percentage	101.75%
Recourse Debt | 5.250% Senior Notes due 2029 | June 15, 2026 to June 14, 2027
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.875%
Recourse Debt | 5.250% Senior Notes due 2029 | June 15, 2027 and thereafter
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.00%
Recourse Debt | 5.250% Senior Notes due 2029 | Treasury Rate
Debt Instrument [Line Items]
Treasury rate redemption (as percentage)	0.50%
Recourse Debt | 3.375% Senior Notes Due 2029
Debt Instrument [Line Items]
Average Early Redemption Percentage	40.00%
Interest rate, stated percentage	3.375%				3.375%
Recourse Debt | 3.375% Senior Notes Due 2029 | Redemption Period Prior to February 15, 2024
Debt Instrument [Line Items]
Average Early Redemption Percentage	103.375%
Outstanding principal after redemption, percentage (at least)	50.00%
Premium percentage of principal amount of note discount factor (as percent)	1.00%
Present value of note (as percentage)	1.01688
Recourse Debt | 3.375% Senior Notes Due 2029 | February 15, 2024 to February 14, 2025
Debt Instrument [Line Items]
Average Early Redemption Percentage	101.688%
Recourse Debt | 3.375% Senior Notes Due 2029 | February 15, 2025 to February 14, 2026
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.844%
Recourse Debt | 3.375% Senior Notes Due 2029 | February 15, 2026 and thereafter
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.00%
Recourse Debt | 3.375% Senior Notes Due 2029 | Treasury Rate
Debt Instrument [Line Items]
Treasury rate redemption (as percentage)	0.50%
Recourse Debt | 3.625% Senior Notes due 2031
Debt Instrument [Line Items]
Average Early Redemption Percentage	40.00%
Interest rate, stated percentage					3.625%
Recourse Debt | 3.625% Senior Notes due 2031 | Redemption Period Prior to February 15, 2026
Debt Instrument [Line Items]
Average Early Redemption Percentage	103.625%
Outstanding principal after redemption, percentage (at least)	50.00%
Premium percentage of principal amount of note discount factor (as percent)	1.00%
Recourse Debt | 3.625% Senior Notes due 2031 | February 15, 2026 to February 14, 2027
Debt Instrument [Line Items]
Average Early Redemption Percentage	101.813%
Present value of note (as percentage)	1.01813
Recourse Debt | 3.625% Senior Notes due 2031 | February 15, 2027 to February 14, 2028
Debt Instrument [Line Items]
Average Early Redemption Percentage	101.208%
Recourse Debt | 3.625% Senior Notes due 2031 | February 15, 2028 to February 14, 2029
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.604%
Recourse Debt | 3.625% Senior Notes due 2031 | February 15, 2029 and thereafter
Debt Instrument [Line Items]
Average Early Redemption Percentage	100.00%
Recourse Debt | 3.625% Senior Notes due 2031 | Treasury Rate
Debt Instrument [Line Items]
Treasury rate redemption (as percentage)	0.50%
Recourse Debt | Convertible Senior Notes Due 2048
Debt Instrument [Line Items]
Interest rate, stated percentage	2.75%
Conversion ratio	0.0222761	0.0216242
Recourse Debt | Senior Notes, due 2032
Debt Instrument [Line Items]
Interest rate, stated percentage	3.875%
Recourse Debt | Senior Notes, due 2032 | Treasury Rate
Debt Instrument [Line Items]
Treasury rate redemption (as percentage)	0.50%