35 Future commitments

Firm contractual commitments for future investments in property, plant and equipment and other intangible assets as of 31 December 2015 aggregated CHF 886 million (prior year: CHF 1,004 million).

Operating leases

Operating leases relate primarily to the rental of real estate for business purposes. See Note 26. In 2015, payments for operating leases amounted to CHF 314 million (prior year: CHF 316 million). Future minimum lease payments in respect of operating lease contracts are as follows:

In CHF million	31.12.2015	31.12.2014
Within 1 year	150	153
Within 1 to 2 years	140	136
Within 2 to 3 years	117	120
Within 3 to 4 years	101	104
Within 4 to 5 years	89	91
After 5 years	372	455
Total future minimum lease payments	969	1,059