Commitments and Contingencies - Schedule of Minimum Rentals and Commitments under Operating Leases (Details) $ in Millions	Dec. 31, 2018 USD ($)
Operating Leases
2019	$ 58
2020	59
2021	54
2022	50
2023	44
Thereafter	1,312
Total	1,577
Sublease Income
2019	(3)
2020	(3)
2021	(4)
2022	(4)
2023	(4)
Thereafter	(3)
Total	(21)
Net Lease Commitments
2019	55
2020	56
2021	50
2022	46
2023	40
Thereafter	1,309
Total	$ 1,556

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Within one year of the balance sheet date, the total operating lease payment amount offset by the respective total future rental payment receivable.

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Within the fifth year of the balance sheet date, the total operating lease payment amount offset by the respective total future rental payment receivable.

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Within the fourth year of the balance sheet date, the total operating lease payment amount offset by the respective total future rental payment receivable.

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Within the third year of the balance sheet date, the total operating lease payment amount offset by the respective total future rental payment receivable.

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Within the second year of the balance sheet date, the total operating lease payment amount offset by the respective total future rental payment receivable.

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The total committed operating lease payment amount offset by the respective total future rental payment receivable.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

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Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

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