Commitments and Contingencies Noncancelable Operating Leases (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Minimum commitments | |||
| 2019 | $ 296 | ||
| 2020 | 286 | ||
| 2021 | 247 | ||
| 2022 | 180 | ||
| 2023 | 146 | ||
| Thereafter | 582 | ||
| Total | 1,737 | ||
| Sublease income | |||
| 2019 | (61) | ||
| 2020 | (51) | ||
| 2021 | (44) | ||
| 2022 | (38) | ||
| 2023 | (33) | ||
| Thereafter | (129) | ||
| Totals | (356) | ||
| Net minimum commitments | |||
| 2019 | 235 | ||
| 2020 | 235 | ||
| 2021 | 203 | ||
| 2022 | 142 | ||
| 2023 | 113 | ||
| Thereafter | 453 | ||
| Totals | 1,381 | ||
| Rental expense under operating leases | $ 300 | $ 284 | $ 270 |
| X | ||||||||||
- Definition Amount of required future sublease rental income receivable in the fifth fiscal year following the latest fiscal year for noncancelable subleasing arrangements. No definition available.
|
| X | ||||||||||
- Definition Amount of required future sublease rental income receivable in the fourth fiscal year following the latest fiscal year for noncancelable subleasing arrangements. No definition available.
|
| X | ||||||||||
- Definition Amount of required future sublease rental income receivable in the third fiscal year following the latest fiscal year for noncancelable subleasing arrangements. No definition available.
|
| X | ||||||||||
- Definition Amount of required future sublease rental income receivable in the second fiscal year following the latest fiscal year for noncancelable subleasing arrangements. No definition available.
|
| X | ||||||||||
- Definition Amount of required future sublease rental income receivable after the fifth fiscal year following the latest fiscal year for noncancelable subleasing arrangements. No definition available.
|
| X | ||||||||||
- Definition Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals, Fiscal Year Maturity [Abstract] No definition available.
|
| X | ||||||||||
- Definition Amount of required future sublease rental income receivable in the next fiscal year following the latest fiscal year for noncancelable subleasing arrangements. No definition available.
|
| X | ||||||||||
- Definition Operating Leases, Future Minimum Payments, Net Of Sublease Rentals No definition available.
|
| X | ||||||||||
- Definition Amount of required minimum rental payments, net of sublease rent receivable maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. No definition available.
|
| X | ||||||||||
- Definition Amount of required minimum rental payments, net of sublease rent receivable maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. No definition available.
|
| X | ||||||||||
- Definition Amount of required minimum rental payments, net of sublease rent receivable maturing in the fourth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. No definition available.
|
| X | ||||||||||
- Definition Amount of required minimum rental payments, net of sublease rent receivable maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. No definition available.
|
| X | ||||||||||
- Definition Amount of required minimum rental payments, net of sublease rent receivable maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. No definition available.
|
| X | ||||||||||
- Definition Operating Leases, Future Minimum Payments, Net Of Sublease Rentals, Fiscal Year Maturity [Abstract] No definition available.
|
| X | ||||||||||
- Definition Amount of required minimum rental payments, net of sublease rent receivable maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. No definition available.
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Contractually required future rental payments receivable on noncancelable subleasing arrangements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition 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 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition 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 fourth 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition 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 third 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition 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 second 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|