Commitments and Contingencies (Details) $ in Millions	Dec. 31, 2018 USD ($)
Operating Leases
2019	$ 56
2020	46
2021	36
2022	29
2023	18
Thereafter	39
Purchase Commitments
2019	389
2020	339
2021	130
2022	22
2023	15
Thereafter	$ 15

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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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Amount of the recorded unconditional purchase obligation maturing in the fifth 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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