Commitments and Contingencies - Guarantees (Details) $ in Millions	Jun. 30, 2017 USD ($)
Commitments and Contingencies Disclosure [Line Items]
Maximum Potential Amount of Future Fundings	$ 263
Recorded Liability for Guarantees	59
Debt service
Commitments and Contingencies Disclosure [Line Items]
Maximum Potential Amount of Future Fundings	149
Recorded Liability for Guarantees	27
Operating profit
Commitments and Contingencies Disclosure [Line Items]
Maximum Potential Amount of Future Fundings	106
Recorded Liability for Guarantees	31
Other
Commitments and Contingencies Disclosure [Line Items]
Maximum Potential Amount of Future Fundings	8
Recorded Liability for Guarantees	$ 1